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
||
||
||
|
|