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#1
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Jim Warman, I am still confused
Jim, or anybody that knows, I tried again today to make sense of the codes
coming out of the OBD-1 , but since I have no real idea what it means, all I can do is ask what the series of numbers means. 5395391157157. Now, is it: 53 = Throttle sensor out of range; TP sensor circuit above maximum voltage 95 = Fuel pump circuit open, PCM to motor; fuel pump secondary circuit failure, PCM to ground 39= ? 11= system pass 57= ? 157= MAF Sensor circuit below minimum voltage I know I asked this before, but these numbers really don't mean a lot to me unless I can connect them to a corresponding system or component. Thanks |
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#2
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IIRC, yours is a '92??
I'm going to assume that these are Continuous Memory codes rather than On Demand codes... bear in mind, codes can unwittingly be set when working around sensors and actuators. The 53 is for the TPS. The 95.... seems to me that one of your original complaints had to do with the fuel pump running continuously - if the relay contacts aren't opening when they should, this code can be generated. 39.... on OBD1 units, it was not uncommon to see "ghost" or undocumented codes... on some models, it indicated a problem with the trqe converter clutch but it's not listed in the '92 PC/ED. I'm not sure where the pass code works into the picture but 57 is listed as a missing octane adjust shorting bar or circuit problem. The PC/ED does make mention if the code shows up with an 11 or not..... OK... I just stared at your list a little harder.... 53 - continuous memory TPS problem 95 - continuous memory, fuel pump or circuit 39 - undocumented for your unit 11 - pass code, not sure on why it shows but it seems to matter 57 - CMDTC, octane shorting bar or circuit 1 - this a separator code and would show as a 10 on higher end scan tools 57 - On Demand code for octane shorting bar or circuit Since 57 is a hard (on demand) code, it should be attended to first. If the bar is missing, then move on to the first CMDTC (53). If the bar is installed, it MAY be a sign of PCM failure.... or not, so it must be checked out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 digit - you wont see any hodge-podges. If CMDTC 53 is recurring, there is the possibility that the high signal to the PCM is driving the fuel system into clear flood strategy and can result in a no start. HTH |
#3
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Okay, thanks, Jim. I knew you'd have an answer. I will have to see where
this beast is and check it out. Since it's starting to get cold here, I need to get this dealt with pretty quick, and since I don't have a garage to work in, I have to make it even quicker. Any tips there? "Jim Warman" > wrote in message news:I4Apd.4028$VL6.1018@clgrps13... | IIRC, yours is a '92?? | | I'm going to assume that these are Continuous Memory codes rather than On | Demand codes... bear in mind, codes can unwittingly be set when working | around sensors and actuators. The 53 is for the TPS. The 95.... seems to me | that one of your original complaints had to do with the fuel pump running | continuously - if the relay contacts aren't opening when they should, this | code can be generated. 39.... on OBD1 units, it was not uncommon to see | "ghost" or undocumented codes... on some models, it indicated a problem with | the trqe converter clutch but it's not listed in the '92 PC/ED. I'm not sure | where the pass code works into the picture but 57 is listed as a missing | octane adjust shorting bar or circuit problem. The PC/ED does make mention | if the code shows up with an 11 or not..... | | OK... I just stared at your list a little harder.... | | 53 - continuous memory TPS problem | 95 - continuous memory, fuel pump or circuit | 39 - undocumented for your unit | 11 - pass code, not sure on why it shows but it seems to matter | 57 - CMDTC, octane shorting bar or circuit | 1 - this a separator code and would show as a 10 on higher end scan tools | 57 - On Demand code for octane shorting bar or circuit | | Since 57 is a hard (on demand) code, it should be attended to first. If the | bar is missing, then move on to the first CMDTC (53). If the bar is | installed, it MAY be a sign of PCM failure.... or not, so it must be checked | out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 digit - | you wont see any hodge-podges. | | If CMDTC 53 is recurring, there is the possibility that the high signal to | the PCM is driving the fuel system into clear flood strategy and can result | in a no start. | | HTH | | | |
#4
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Okay, I don't se anything on my list of OBD-1 codes listing #57 and no
reference to an octane shorting bar/circuit. Wanna draw me a map so I can get started on this stuff? My books don't list such a beast. I was thinking about cleaning the MAF sensor to see if that would clear up the problem. If I am reading the description of it correctly, it might be possible to have it raise resistance and lower voltage available to drive the relays or related equip....just a guess though, and it seems to be a rather common problem that is easily remedied. What are your thoughts....seeing as I am handy and pretty technically oriented, but I haven't been a mechanic for like a bazillion years? Do they make an adapter that would patch the port to a laptop and software to read it? If not, someone ought to put one together. It'd certainly make life a lot easier Thanks again. "Jim Warman" > wrote in message news:I4Apd.4028$VL6.1018@clgrps13... | IIRC, yours is a '92?? | | I'm going to assume that these are Continuous Memory codes rather than On | Demand codes... bear in mind, codes can unwittingly be set when working | around sensors and actuators. The 53 is for the TPS. The 95.... seems to me | that one of your original complaints had to do with the fuel pump running | continuously - if the relay contacts aren't opening when they should, this | code can be generated. 39.... on OBD1 units, it was not uncommon to see | "ghost" or undocumented codes... on some models, it indicated a problem with | the trqe converter clutch but it's not listed in the '92 PC/ED. I'm not sure | where the pass code works into the picture but 57 is listed as a missing | octane adjust shorting bar or circuit problem. The PC/ED does make mention | if the code shows up with an 11 or not..... | | OK... I just stared at your list a little harder.... | | 53 - continuous memory TPS problem | 95 - continuous memory, fuel pump or circuit | 39 - undocumented for your unit | 11 - pass code, not sure on why it shows but it seems to matter | 57 - CMDTC, octane shorting bar or circuit | 1 - this a separator code and would show as a 10 on higher end scan tools | 57 - On Demand code for octane shorting bar or circuit | | Since 57 is a hard (on demand) code, it should be attended to first. If the | bar is missing, then move on to the first CMDTC (53). If the bar is | installed, it MAY be a sign of PCM failure.... or not, so it must be checked | out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 digit - | you wont see any hodge-podges. | | If CMDTC 53 is recurring, there is the possibility that the high signal to | the PCM is driving the fuel system into clear flood strategy and can result | in a no start. | | HTH | | | |
#5
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Okay, I cleaned the MAF sensor with carb cleaner, seeing as y'all do
this a lot, and reinstalled it. The CEL went out and hasn't come back on yet. Crossing fingers, and waiting for Jim's opinion.. "John Riggs" > wrote in message ... | Okay, I don't se anything on my list of OBD-1 codes listing #57 and no | reference to an octane shorting bar/circuit. Wanna draw me a map so I can | get started on this stuff? My books don't list such a beast. | I was thinking about cleaning the MAF sensor to see if that would clear | up the problem. If I am reading the description of it correctly, it might be | possible to have it raise resistance and lower voltage available to drive | the relays or related equip....just a guess though, and it seems to be a | rather common problem that is easily remedied. | | What are your thoughts....seeing as I am handy and pretty technically | oriented, but I haven't been a mechanic for like a bazillion years? | | Do they make an adapter that would patch the port to a laptop and | software to read it? If not, someone ought to put one together. It'd | certainly make life a lot easier | | Thanks again. | | | "Jim Warman" > wrote in message | news:I4Apd.4028$VL6.1018@clgrps13... || IIRC, yours is a '92?? || || I'm going to assume that these are Continuous Memory codes rather than On || Demand codes... bear in mind, codes can unwittingly be set when working || around sensors and actuators. The 53 is for the TPS. The 95.... seems to | me || that one of your original complaints had to do with the fuel pump running || continuously - if the relay contacts aren't opening when they should, this || code can be generated. 39.... on OBD1 units, it was not uncommon to see || "ghost" or undocumented codes... on some models, it indicated a problem | with || the trqe converter clutch but it's not listed in the '92 PC/ED. I'm not | sure || where the pass code works into the picture but 57 is listed as a missing || octane adjust shorting bar or circuit problem. The PC/ED does make mention || if the code shows up with an 11 or not..... || || OK... I just stared at your list a little harder.... || || 53 - continuous memory TPS problem || 95 - continuous memory, fuel pump or circuit || 39 - undocumented for your unit || 11 - pass code, not sure on why it shows but it seems to matter || 57 - CMDTC, octane shorting bar or circuit || 1 - this a separator code and would show as a 10 on higher end scan tools || 57 - On Demand code for octane shorting bar or circuit || || Since 57 is a hard (on demand) code, it should be attended to first. If | the || bar is missing, then move on to the first CMDTC (53). If the bar is || installed, it MAY be a sign of PCM failure.... or not, so it must be | checked || out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 digit - || you wont see any hodge-podges. || || If CMDTC 53 is recurring, there is the possibility that the high signal to || the PCM is driving the fuel system into clear flood strategy and can | result || in a no start. || || HTH || || || | | |
#6
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My experience with dirty MAFs is the odd hard start but usually crappy idle,
probably hesitation..... higher rpms are usually slower to exhibit problems because the MAF is relative reading (like a vacuum leak can cause a crappy idle but be a nonentity at high airflows). Ma Ford tells us cleaning the MAF is a no-no.... from a warranty standpoint, I can see their decision.... they want to avoid repeat visits for the same concern. From a retai standpoint, I have to know my customer - some will opt to clean the MAF with the undersanding that this may not be the cure..... others would rahter be assured of a onetime fix and go the big money route. I have seen cleaning the MAF work wonders...... What I don't see is cleaning the MAF having a lot to do with your codes...... seems to me I often mention clearing codes and driving the car to see what codes come back. Is there a chance you have a bunch of old codes? You're not so much fixing a car as fixing a computer.... logic, logic, logic. there is no cause for confusion, only cause for deeper thought. "John Riggs" > wrote in message ... > Okay, I cleaned the MAF sensor with carb cleaner, seeing as y'all do > this a lot, and reinstalled it. The CEL went out and hasn't come back on > yet. Crossing fingers, and waiting for Jim's opinion.. > > > "John Riggs" > wrote in message > ... > | Okay, I don't se anything on my list of OBD-1 codes listing #57 and > no > | reference to an octane shorting bar/circuit. Wanna draw me a map so I > can > | get started on this stuff? My books don't list such a beast. > | I was thinking about cleaning the MAF sensor to see if that would > clear > | up the problem. If I am reading the description of it correctly, it > might > be > | possible to have it raise resistance and lower voltage available to > drive > | the relays or related equip....just a guess though, and it seems to be a > | rather common problem that is easily remedied. > | > | What are your thoughts....seeing as I am handy and pretty technically > | oriented, but I haven't been a mechanic for like a bazillion years? > | > | Do they make an adapter that would patch the port to a laptop and > | software to read it? If not, someone ought to put one together. It'd > | certainly make life a lot easier > | > | Thanks again. > | > | > | "Jim Warman" > wrote in message > | news:I4Apd.4028$VL6.1018@clgrps13... > || IIRC, yours is a '92?? > || > || I'm going to assume that these are Continuous Memory codes rather than > On > || Demand codes... bear in mind, codes can unwittingly be set when working > || around sensors and actuators. The 53 is for the TPS. The 95.... seems > to > | me > || that one of your original complaints had to do with the fuel pump > running > || continuously - if the relay contacts aren't opening when they should, > this > || code can be generated. 39.... on OBD1 units, it was not uncommon to see > || "ghost" or undocumented codes... on some models, it indicated a problem > | with > || the trqe converter clutch but it's not listed in the '92 PC/ED. I'm not > | sure > || where the pass code works into the picture but 57 is listed as a > missing > || octane adjust shorting bar or circuit problem. The PC/ED does make > mention > || if the code shows up with an 11 or not..... > || > || OK... I just stared at your list a little harder.... > || > || 53 - continuous memory TPS problem > || 95 - continuous memory, fuel pump or circuit > || 39 - undocumented for your unit > || 11 - pass code, not sure on why it shows but it seems to matter > || 57 - CMDTC, octane shorting bar or circuit > || 1 - this a separator code and would show as a 10 on higher end scan > tools > || 57 - On Demand code for octane shorting bar or circuit > || > || Since 57 is a hard (on demand) code, it should be attended to first. If > | the > || bar is missing, then move on to the first CMDTC (53). If the bar is > || installed, it MAY be a sign of PCM failure.... or not, so it must be > | checked > || out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 > digit - > || you wont see any hodge-podges. > || > || If CMDTC 53 is recurring, there is the possibility that the high signal > to > || the PCM is driving the fuel system into clear flood strategy and can > | result > || in a no start. > || > || HTH > || > || > || > | > | > > |
#7
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I had cleared the codes before running the vehicle a bit to warm it up
and drive it around. Brought it back and put the reader to it. Those were the codes I got.. So, I did as you suggested, that is why I was asking your opinion of if it was possibly the problem or if I am waiting to see it come back. Trust me, I know how to follow directions. I gambled the MAF because it seems the one thing that has been common to a lot of posts here and on the website. Seeing as I is a po' boy, I have to watch my pennies. "Jim Warman" > wrote in message news:A3Upd.8845$VL6.1821@clgrps13... | My experience with dirty MAFs is the odd hard start but usually crappy idle, | probably hesitation..... higher rpms are usually slower to exhibit problems | because the MAF is relative reading (like a vacuum leak can cause a crappy | idle but be a nonentity at high airflows). | | Ma Ford tells us cleaning the MAF is a no-no.... from a warranty standpoint, | I can see their decision.... they want to avoid repeat visits for the same | concern. From a retai standpoint, I have to know my customer - some will opt | to clean the MAF with the undersanding that this may not be the cure..... | others would rahter be assured of a onetime fix and go the big money route. | I have seen cleaning the MAF work wonders...... | | What I don't see is cleaning the MAF having a lot to do with your | codes...... seems to me I often mention clearing codes and driving the car | to see what codes come back. Is there a chance you have a bunch of old | codes? You're not so much fixing a car as fixing a computer.... logic, | logic, logic. there is no cause for confusion, only cause for deeper | thought. | | | "John Riggs" > wrote in message | ... | > Okay, I cleaned the MAF sensor with carb cleaner, seeing as y'all do | > this a lot, and reinstalled it. The CEL went out and hasn't come back on | > yet. Crossing fingers, and waiting for Jim's opinion.. | > | > | > "John Riggs" > wrote in message | > ... | > | Okay, I don't se anything on my list of OBD-1 codes listing #57 and | > no | > | reference to an octane shorting bar/circuit. Wanna draw me a map so I | > can | > | get started on this stuff? My books don't list such a beast. | > | I was thinking about cleaning the MAF sensor to see if that would | > clear | > | up the problem. If I am reading the description of it correctly, it | > might | > be | > | possible to have it raise resistance and lower voltage available to | > drive | > | the relays or related equip....just a guess though, and it seems to be a | > | rather common problem that is easily remedied. | > | | > | What are your thoughts....seeing as I am handy and pretty technically | > | oriented, but I haven't been a mechanic for like a bazillion years? | > | | > | Do they make an adapter that would patch the port to a laptop and | > | software to read it? If not, someone ought to put one together. It'd | > | certainly make life a lot easier | > | | > | Thanks again. | > | | > | | > | "Jim Warman" > wrote in message | > | news:I4Apd.4028$VL6.1018@clgrps13... | > || IIRC, yours is a '92?? | > || | > || I'm going to assume that these are Continuous Memory codes rather than | > On | > || Demand codes... bear in mind, codes can unwittingly be set when working | > || around sensors and actuators. The 53 is for the TPS. The 95.... seems | > to | > | me | > || that one of your original complaints had to do with the fuel pump | > running | > || continuously - if the relay contacts aren't opening when they should, | > this | > || code can be generated. 39.... on OBD1 units, it was not uncommon to see | > || "ghost" or undocumented codes... on some models, it indicated a problem | > | with | > || the trqe converter clutch but it's not listed in the '92 PC/ED. I'm not | > | sure | > || where the pass code works into the picture but 57 is listed as a | > missing | > || octane adjust shorting bar or circuit problem. The PC/ED does make | > mention | > || if the code shows up with an 11 or not..... | > || | > || OK... I just stared at your list a little harder.... | > || | > || 53 - continuous memory TPS problem | > || 95 - continuous memory, fuel pump or circuit | > || 39 - undocumented for your unit | > || 11 - pass code, not sure on why it shows but it seems to matter | > || 57 - CMDTC, octane shorting bar or circuit | > || 1 - this a separator code and would show as a 10 on higher end scan | > tools | > || 57 - On Demand code for octane shorting bar or circuit | > || | > || Since 57 is a hard (on demand) code, it should be attended to first. If | > | the | > || bar is missing, then move on to the first CMDTC (53). If the bar is | > || installed, it MAY be a sign of PCM failure.... or not, so it must be | > | checked | > || out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 | > digit - | > || you wont see any hodge-podges. | > || | > || If CMDTC 53 is recurring, there is the possibility that the high signal | > to | > || the PCM is driving the fuel system into clear flood strategy and can | > | result | > || in a no start. | > || | > || HTH | > || | > || | > || | > | | > | | > | > | | |
#8
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Okay, Jim, the light came on again. Seems it almost made it a whole day
without going on, and it came on, went off after a few minutes, then went back on and stays on. So what do I check now, and how do I find it? "John Riggs" > wrote in message ... | I had cleared the codes before running the vehicle a bit to warm it up | and drive it around. Brought it back and put the reader to it. Those were | the codes I got.. So, I did as you suggested, that is why I was asking your | opinion of if it was possibly the problem or if I am waiting to see it come | back. | Trust me, I know how to follow directions. I gambled the MAF because it | seems the one thing that has been common to a lot of posts here and on the | website. Seeing as I is a po' boy, I have to watch my pennies. | | | | "Jim Warman" > wrote in message | news:A3Upd.8845$VL6.1821@clgrps13... || My experience with dirty MAFs is the odd hard start but usually crappy | idle, || probably hesitation..... higher rpms are usually slower to exhibit | problems || because the MAF is relative reading (like a vacuum leak can cause a crappy || idle but be a nonentity at high airflows). || || Ma Ford tells us cleaning the MAF is a no-no.... from a warranty | standpoint, || I can see their decision.... they want to avoid repeat visits for the same || concern. From a retai standpoint, I have to know my customer - some will | opt || to clean the MAF with the undersanding that this may not be the cure..... || others would rahter be assured of a onetime fix and go the big money | route. || I have seen cleaning the MAF work wonders...... || || What I don't see is cleaning the MAF having a lot to do with your || codes...... seems to me I often mention clearing codes and driving the car || to see what codes come back. Is there a chance you have a bunch of old || codes? You're not so much fixing a car as fixing a computer.... logic, || logic, logic. there is no cause for confusion, only cause for deeper || thought. || || || "John Riggs" > wrote in message || ... || > Okay, I cleaned the MAF sensor with carb cleaner, seeing as y'all do || > this a lot, and reinstalled it. The CEL went out and hasn't come back on || > yet. Crossing fingers, and waiting for Jim's opinion.. || > || > || > "John Riggs" > wrote in message || > ... || > | Okay, I don't se anything on my list of OBD-1 codes listing #57 and || > no || > | reference to an octane shorting bar/circuit. Wanna draw me a map so I || > can || > | get started on this stuff? My books don't list such a beast. || > | I was thinking about cleaning the MAF sensor to see if that would || > clear || > | up the problem. If I am reading the description of it correctly, it || > might || > be || > | possible to have it raise resistance and lower voltage available to || > drive || > | the relays or related equip....just a guess though, and it seems to be | a || > | rather common problem that is easily remedied. || > | || > | What are your thoughts....seeing as I am handy and pretty | technically || > | oriented, but I haven't been a mechanic for like a bazillion years? || > | || > | Do they make an adapter that would patch the port to a laptop and || > | software to read it? If not, someone ought to put one together. It'd || > | certainly make life a lot easier || > | || > | Thanks again. || > | || > | || > | "Jim Warman" > wrote in message || > | news:I4Apd.4028$VL6.1018@clgrps13... || > || IIRC, yours is a '92?? || > || || > || I'm going to assume that these are Continuous Memory codes rather | than || > On || > || Demand codes... bear in mind, codes can unwittingly be set when | working || > || around sensors and actuators. The 53 is for the TPS. The 95.... seems || > to || > | me || > || that one of your original complaints had to do with the fuel pump || > running || > || continuously - if the relay contacts aren't opening when they should, || > this || > || code can be generated. 39.... on OBD1 units, it was not uncommon to | see || > || "ghost" or undocumented codes... on some models, it indicated a | problem || > | with || > || the trqe converter clutch but it's not listed in the '92 PC/ED. I'm | not || > | sure || > || where the pass code works into the picture but 57 is listed as a || > missing || > || octane adjust shorting bar or circuit problem. The PC/ED does make || > mention || > || if the code shows up with an 11 or not..... || > || || > || OK... I just stared at your list a little harder.... || > || || > || 53 - continuous memory TPS problem || > || 95 - continuous memory, fuel pump or circuit || > || 39 - undocumented for your unit || > || 11 - pass code, not sure on why it shows but it seems to matter || > || 57 - CMDTC, octane shorting bar or circuit || > || 1 - this a separator code and would show as a 10 on higher end scan || > tools || > || 57 - On Demand code for octane shorting bar or circuit || > || || > || Since 57 is a hard (on demand) code, it should be attended to first. | If || > | the || > || bar is missing, then move on to the first CMDTC (53). If the bar is || > || installed, it MAY be a sign of PCM failure.... or not, so it must be || > | checked || > || out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 || > digit - || > || you wont see any hodge-podges. || > || || > || If CMDTC 53 is recurring, there is the possibility that the high | signal || > to || > || the PCM is driving the fuel system into clear flood strategy and can || > | result || > || in a no start. || > || || > || HTH || > || || > || || > || || > | || > | || > || > || || | | |
#9
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Scan codes and see which returned..... To give you an idea of the "accepted"
diagnostic routine. If there are any "hard" codes (such as your 57), these get serviced FIRST... before doing anything else. If the 57 is still present as an on demand code, it HAS to be addressed first since whatever is causing the hard code may deliver other codes. If there are no hard codes, we note any continuous codes and try to reproduce them by driving the car. The CEL is offering valuable clues and we need to take advantage of them. If you truly want to mind your pennies, you will avoid gambles and resort to tried and true diagnostic procedures. "John Riggs" > wrote in message ... > Okay, Jim, the light came on again. Seems it almost made it a whole day > without going on, and it came on, went off after a few minutes, then went > back on and stays on. So what do I check now, and how do I find it? > > > "John Riggs" > wrote in message > ... > | I had cleared the codes before running the vehicle a bit to warm it > up > | and drive it around. Brought it back and put the reader to it. Those > were > | the codes I got.. So, I did as you suggested, that is why I was asking > your > | opinion of if it was possibly the problem or if I am waiting to see it > come > | back. > | Trust me, I know how to follow directions. I gambled the MAF because > it > | seems the one thing that has been common to a lot of posts here and on > the > | website. Seeing as I is a po' boy, I have to watch my pennies. > | > | > | > | "Jim Warman" > wrote in message > | news:A3Upd.8845$VL6.1821@clgrps13... > || My experience with dirty MAFs is the odd hard start but usually crappy > | idle, > || probably hesitation..... higher rpms are usually slower to exhibit > | problems > || because the MAF is relative reading (like a vacuum leak can cause a > crappy > || idle but be a nonentity at high airflows). > || > || Ma Ford tells us cleaning the MAF is a no-no.... from a warranty > | standpoint, > || I can see their decision.... they want to avoid repeat visits for the > same > || concern. From a retai standpoint, I have to know my customer - some > will > | opt > || to clean the MAF with the undersanding that this may not be the > cure..... > || others would rahter be assured of a onetime fix and go the big money > | route. > || I have seen cleaning the MAF work wonders...... > || > || What I don't see is cleaning the MAF having a lot to do with your > || codes...... seems to me I often mention clearing codes and driving the > car > || to see what codes come back. Is there a chance you have a bunch of old > || codes? You're not so much fixing a car as fixing a computer.... logic, > || logic, logic. there is no cause for confusion, only cause for deeper > || thought. > || > || > || "John Riggs" > wrote in message > || ... > || > Okay, I cleaned the MAF sensor with carb cleaner, seeing as y'all > do > || > this a lot, and reinstalled it. The CEL went out and hasn't come back > on > || > yet. Crossing fingers, and waiting for Jim's opinion.. > || > > || > > || > "John Riggs" > wrote in message > || > ... > || > | Okay, I don't se anything on my list of OBD-1 codes listing #57 > and > || > no > || > | reference to an octane shorting bar/circuit. Wanna draw me a map so > I > || > can > || > | get started on this stuff? My books don't list such a beast. > || > | I was thinking about cleaning the MAF sensor to see if that > would > || > clear > || > | up the problem. If I am reading the description of it correctly, it > || > might > || > be > || > | possible to have it raise resistance and lower voltage available to > || > drive > || > | the relays or related equip....just a guess though, and it seems to > be > | a > || > | rather common problem that is easily remedied. > || > | > || > | What are your thoughts....seeing as I am handy and pretty > | technically > || > | oriented, but I haven't been a mechanic for like a bazillion years? > || > | > || > | Do they make an adapter that would patch the port to a laptop > and > || > | software to read it? If not, someone ought to put one together. > It'd > || > | certainly make life a lot easier > || > | > || > | Thanks again. > || > | > || > | > || > | "Jim Warman" > wrote in message > || > | news:I4Apd.4028$VL6.1018@clgrps13... > || > || IIRC, yours is a '92?? > || > || > || > || I'm going to assume that these are Continuous Memory codes rather > | than > || > On > || > || Demand codes... bear in mind, codes can unwittingly be set when > | working > || > || around sensors and actuators. The 53 is for the TPS. The 95.... > seems > || > to > || > | me > || > || that one of your original complaints had to do with the fuel pump > || > running > || > || continuously - if the relay contacts aren't opening when they > should, > || > this > || > || code can be generated. 39.... on OBD1 units, it was not uncommon > to > | see > || > || "ghost" or undocumented codes... on some models, it indicated a > | problem > || > | with > || > || the trqe converter clutch but it's not listed in the '92 PC/ED. > I'm > | not > || > | sure > || > || where the pass code works into the picture but 57 is listed as a > || > missing > || > || octane adjust shorting bar or circuit problem. The PC/ED does make > || > mention > || > || if the code shows up with an 11 or not..... > || > || > || > || OK... I just stared at your list a little harder.... > || > || > || > || 53 - continuous memory TPS problem > || > || 95 - continuous memory, fuel pump or circuit > || > || 39 - undocumented for your unit > || > || 11 - pass code, not sure on why it shows but it seems to matter > || > || 57 - CMDTC, octane shorting bar or circuit > || > || 1 - this a separator code and would show as a 10 on higher end > scan > || > tools > || > || 57 - On Demand code for octane shorting bar or circuit > || > || > || > || Since 57 is a hard (on demand) code, it should be attended to > first. > | If > || > | the > || > || bar is missing, then move on to the first CMDTC (53). If the bar > is > || > || installed, it MAY be a sign of PCM failure.... or not, so it must > be > || > | checked > || > || out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 > || > digit - > || > || you wont see any hodge-podges. > || > || > || > || If CMDTC 53 is recurring, there is the possibility that the high > | signal > || > to > || > || the PCM is driving the fuel system into clear flood strategy and > can > || > | result > || > || in a no start. > || > || > || > || HTH > || > || > || > || > || > || > || > | > || > | > || > > || > > || > || > | > | > > |
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Well, the 57 you addressed doesn't exist in my manuals, hence it doesn't
address how to repair it or even how to find what this problem is. Got a road map to tell me where to look for this beast? I still need to get out and warm up the vehicle and scan it to see what it says, but with the snow flying and a snowblower on the fritz, everyone is more concerned about the bloody snowblower than the vehicle that fetches the parts and groceries. So, draw me a road map and I'll get to working on it, otherwise I'm up a creek without a paddle / clue. Thanks, Jim "Jim Warman" > wrote in message news:6Oeqd.13202$VL6.11136@clgrps13... | Scan codes and see which returned..... To give you an idea of the "accepted" | diagnostic routine. If there are any "hard" codes (such as your 57), these | get serviced FIRST... before doing anything else. If the 57 is still present | as an on demand code, it HAS to be addressed first since whatever is causing | the hard code may deliver other codes. If there are no hard codes, we note | any continuous codes and try to reproduce them by driving the car. | | The CEL is offering valuable clues and we need to take advantage of them. If | you truly want to mind your pennies, you will avoid gambles and resort to | tried and true diagnostic procedures. | | | "John Riggs" > wrote in message | ... | > Okay, Jim, the light came on again. Seems it almost made it a whole day | > without going on, and it came on, went off after a few minutes, then went | > back on and stays on. So what do I check now, and how do I find it? | > | > | > "John Riggs" > wrote in message | > ... | > | I had cleared the codes before running the vehicle a bit to warm it | > up | > | and drive it around. Brought it back and put the reader to it. Those | > were | > | the codes I got.. So, I did as you suggested, that is why I was asking | > your | > | opinion of if it was possibly the problem or if I am waiting to see it | > come | > | back. | > | Trust me, I know how to follow directions. I gambled the MAF because | > it | > | seems the one thing that has been common to a lot of posts here and on | > the | > | website. Seeing as I is a po' boy, I have to watch my pennies. | > | | > | | > | | > | "Jim Warman" > wrote in message | > | news:A3Upd.8845$VL6.1821@clgrps13... | > || My experience with dirty MAFs is the odd hard start but usually crappy | > | idle, | > || probably hesitation..... higher rpms are usually slower to exhibit | > | problems | > || because the MAF is relative reading (like a vacuum leak can cause a | > crappy | > || idle but be a nonentity at high airflows). | > || | > || Ma Ford tells us cleaning the MAF is a no-no.... from a warranty | > | standpoint, | > || I can see their decision.... they want to avoid repeat visits for the | > same | > || concern. From a retai standpoint, I have to know my customer - some | > will | > | opt | > || to clean the MAF with the undersanding that this may not be the | > cure..... | > || others would rahter be assured of a onetime fix and go the big money | > | route. | > || I have seen cleaning the MAF work wonders...... | > || | > || What I don't see is cleaning the MAF having a lot to do with your | > || codes...... seems to me I often mention clearing codes and driving the | > car | > || to see what codes come back. Is there a chance you have a bunch of old | > || codes? You're not so much fixing a car as fixing a computer.... logic, | > || logic, logic. there is no cause for confusion, only cause for deeper | > || thought. | > || | > || | > || "John Riggs" > wrote in message | > || ... | > || > Okay, I cleaned the MAF sensor with carb cleaner, seeing as y'all | > do | > || > this a lot, and reinstalled it. The CEL went out and hasn't come back | > on | > || > yet. Crossing fingers, and waiting for Jim's opinion.. | > || > | > || > | > || > "John Riggs" > wrote in message | > || > ... | > || > | Okay, I don't se anything on my list of OBD-1 codes listing #57 | > and | > || > no | > || > | reference to an octane shorting bar/circuit. Wanna draw me a map so | > I | > || > can | > || > | get started on this stuff? My books don't list such a beast. | > || > | I was thinking about cleaning the MAF sensor to see if that | > would | > || > clear | > || > | up the problem. If I am reading the description of it correctly, it | > || > might | > || > be | > || > | possible to have it raise resistance and lower voltage available to | > || > drive | > || > | the relays or related equip....just a guess though, and it seems to | > be | > | a | > || > | rather common problem that is easily remedied. | > || > | | > || > | What are your thoughts....seeing as I am handy and pretty | > | technically | > || > | oriented, but I haven't been a mechanic for like a bazillion years? | > || > | | > || > | Do they make an adapter that would patch the port to a laptop | > and | > || > | software to read it? If not, someone ought to put one together. | > It'd | > || > | certainly make life a lot easier | > || > | | > || > | Thanks again. | > || > | | > || > | | > || > | "Jim Warman" > wrote in message | > || > | news:I4Apd.4028$VL6.1018@clgrps13... | > || > || IIRC, yours is a '92?? | > || > || | > || > || I'm going to assume that these are Continuous Memory codes rather | > | than | > || > On | > || > || Demand codes... bear in mind, codes can unwittingly be set when | > | working | > || > || around sensors and actuators. The 53 is for the TPS. The 95.... | > seems | > || > to | > || > | me | > || > || that one of your original complaints had to do with the fuel pump | > || > running | > || > || continuously - if the relay contacts aren't opening when they | > should, | > || > this | > || > || code can be generated. 39.... on OBD1 units, it was not uncommon | > to | > | see | > || > || "ghost" or undocumented codes... on some models, it indicated a | > | problem | > || > | with | > || > || the trqe converter clutch but it's not listed in the '92 PC/ED. | > I'm | > | not | > || > | sure | > || > || where the pass code works into the picture but 57 is listed as a | > || > missing | > || > || octane adjust shorting bar or circuit problem. The PC/ED does make | > || > mention | > || > || if the code shows up with an 11 or not..... | > || > || | > || > || OK... I just stared at your list a little harder.... | > || > || | > || > || 53 - continuous memory TPS problem | > || > || 95 - continuous memory, fuel pump or circuit | > || > || 39 - undocumented for your unit | > || > || 11 - pass code, not sure on why it shows but it seems to matter | > || > || 57 - CMDTC, octane shorting bar or circuit | > || > || 1 - this a separator code and would show as a 10 on higher end | > scan | > || > tools | > || > || 57 - On Demand code for octane shorting bar or circuit | > || > || | > || > || Since 57 is a hard (on demand) code, it should be attended to | > first. | > | If | > || > | the | > || > || bar is missing, then move on to the first CMDTC (53). If the bar | > is | > || > || installed, it MAY be a sign of PCM failure.... or not, so it must | > be | > || > | checked | > || > || out. Codes on early '90s stuff will either be ALL 2 digit or ALL 3 | > || > digit - | > || > || you wont see any hodge-podges. | > || > || | > || > || If CMDTC 53 is recurring, there is the possibility that the high | > | signal | > || > to | > || > || the PCM is driving the fuel system into clear flood strategy and | > can | > || > | result | > || > || in a no start. | > || > || | > || > || HTH | > || > || | > || > || | > || > || | > || > | | > || > | | > || > | > || > | > || | > || | > | | > | | > | > | | |
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