If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
faulty accumulator PT
anyone have any idea of the symptoms of a bad air/con accumulator
|
Ads |
#2
|
|||
|
|||
faulty accumulator PT
On Tue, 05 Sep 2006 18:20:23 GMT, "therebel" >
wrote: >anyone have any idea of the symptoms of a bad air/con accumulator <snip> An accumulator, by definition of refrigeration equipment, is just a "slop tank" to keep liquid out of, say, the suction inlet on a compressor, or to keep condensed liquid off the valves/heads of a compressor. There are no moving parts. However, many systems have an orifice tube or screen that is in their accumulator tanks that acts as a coarse system filter, and that does get plugged up during a compressor failure, or if the system has been run to death on a low charge, or on mixed/wrong oil. Signs of a plugged orifice tube/suction screen in any system would be abnormally low suction pressure at the compressor, somewhat high head pressure and very high superheat out of the evaporator when compared to the compressor inlet pressure. If the system has a test port at the evaporator tailpipe (rare anymore, if at all) you'll also see a high evaporator pressure. On a full charge, that means the suction side will be "not cold" to the hand under light load (low evaporator fan speed, etc.) while the compressor suction reading will be abnormally low. There is no way, other than if it filled up with debris from a failed compressor that an accumulator proper could fail...it's just a tank with a baffle in it. Same goes for most automotive receiver/dryers...just a standard receiver tank (opposite of an accumulator; it wants nothing BUT liquid to go out its outlet) with a cheap bag of silica gel hung in it. Better aftermarket receivers can be had with molded cores as are used in commercial refrigeration, but they don't come cheap and are tough to source. Sporlan, years ago, did offer a line of aftermarket molded cord reciever/dryers which were excellent at cleaning up dirty/acetic systems, but FrigiKing and ARA ran them out of that part of the business. Sporlan is still probably the largest and best supplier of commercial refrigeration accessories and valves in the US. |
#3
|
|||
|
|||
faulty accumulator PT
"therebel" > wrote in message ... > anyone have any idea of the symptoms of a bad air/con accumulator > > Why not just post a question on what's wrong with your vehicle? Glenn |
#4
|
|||
|
|||
faulty accumulator PT
in reply to Glenn, I did not want to influence the reply. ok here goes, PT
2.2CRD 2002 model year. 40k on the clock. car came in to workshop with burned out compressor clutch. tech replaced compressor and these symptoms started. initial start up ac works ok for about 3 mins, the low pressure gauge on the regas station indicates about 5 bar then starts to rise then drop as the clutch cycles approx every 5 secs. every cycle takes the low pressure up a touch more until the cooling effect stops and the pipework feels warm. the high pressure never moves from 5 bar . when evacuating the system the full charge is never removed and has to be repeated several times. the fixed orifice tube has also been renewed. i am thinking towards the accumulator but have never experienced a failure in 10 years. > wrote in message ... > anyone have any idea of the symptoms of a bad air/con accumulator > > |
#5
|
|||
|
|||
faulty accumulator PT
"therebel" > wrote in message ... > in reply to Glenn, I did not want to influence the reply. ok here goes, PT > 2.2CRD 2002 model year. 40k on the clock. car came in to workshop with > burned out compressor clutch. tech replaced compressor and these symptoms > started. initial start up ac works ok for about 3 mins, the low pressure > gauge on the regas station indicates about 5 bar then starts to rise then > drop as the clutch cycles approx every 5 secs. every cycle takes the low > pressure up a touch more until the cooling effect stops and the pipework > feels warm. the high pressure never moves from 5 bar . when evacuating > the system the full charge is never removed and has to be repeated several > times. the fixed orifice tube has also been renewed. i am thinking towards > the accumulator but have never experienced a failure in 10 years. > > wrote in message > ... > > anyone have any idea of the symptoms of a bad air/con accumulator > > > > > > 2 questions.......... First question to you is are you using the test port for the high side gauge at the compressor or at the hose itself? 2nd question..... Does the A/C condenser fan come on as soon as the compressor engages. My guess will be you are using the ports at the hoses on the top and the fan does not turn on when the compressor turns on. If the fan does not turn on as soon as the compressor kicks on the high side will go extremely high, the condenser will get very hot and in some cases the R-134 may blow out. If you use the port at the top you will not see the high side. It has to be connected to the compressor port. Very hard to access unless you have a small hand/arm the grille and radiator must be loosened Glenn |
#6
|
|||
|
|||
faulty accumulator PT
"maxpower" > wrote in message . .. > > "therebel" > wrote in message > ... > > in reply to Glenn, I did not want to influence the reply. ok here goes, > PT > > 2.2CRD 2002 model year. 40k on the clock. car came in to workshop with > > burned out compressor clutch. tech replaced compressor and these symptoms > > started. initial start up ac works ok for about 3 mins, the low pressure > > gauge on the regas station indicates about 5 bar then starts to rise then > > drop as the clutch cycles approx every 5 secs. every cycle takes the low > > pressure up a touch more until the cooling effect stops and the pipework > > feels warm. the high pressure never moves from 5 bar . when evacuating > > the system the full charge is never removed and has to be repeated > several > > times. the fixed orifice tube has also been renewed. i am thinking > towards > > the accumulator but have never experienced a failure in 10 years. > > > wrote in message > > ... > > > anyone have any idea of the symptoms of a bad air/con accumulator > > > > > > > > > > > 2 questions.......... First question to you is are you using the test port > for the high side gauge at the compressor or at the hose itself? > 2nd question..... Does the A/C condenser fan come on as soon as the > compressor engages. > > My guess will be you are using the ports at the hoses on the top and the fan > does not turn on when the compressor turns on. If the fan does not turn on > as soon as the compressor kicks on the high side will go extremely high, the > condenser will get very hot and in some cases the R-134 may blow out. If you > use the port at the top you will not see the high side. It has to be > connected to the compressor port. Very hard to access unless you have a > small hand/arm the grille and radiator must be loosened > > Glenn > > you are right i am using top ports and fan does not cut in . > |
#7
|
|||
|
|||
faulty accumulator PT
"therebel" > wrote in message news > > "maxpower" > wrote in message > . .. > > > > "therebel" > wrote in message > > ... > > > in reply to Glenn, I did not want to influence the reply. ok here goes, > > PT > > > 2.2CRD 2002 model year. 40k on the clock. car came in to workshop with > > > burned out compressor clutch. tech replaced compressor and these > symptoms > > > started. initial start up ac works ok for about 3 mins, the low > pressure > > > gauge on the regas station indicates about 5 bar then starts to rise > then > > > drop as the clutch cycles approx every 5 secs. every cycle takes the > low > > > pressure up a touch more until the cooling effect stops and the pipework > > > feels warm. the high pressure never moves from 5 bar . when > evacuating > > > the system the full charge is never removed and has to be repeated > > several > > > times. the fixed orifice tube has also been renewed. i am thinking > > towards > > > the accumulator but have never experienced a failure in 10 years. > > > > wrote in message > > > ... > > > > anyone have any idea of the symptoms of a bad air/con accumulator > > > > > > > > > > > > > > > > 2 questions.......... First question to you is are you using the test port > > for the high side gauge at the compressor or at the hose itself? > > 2nd question..... Does the A/C condenser fan come on as soon as the > > compressor engages. > > > > My guess will be you are using the ports at the hoses on the top and the > fan > > does not turn on when the compressor turns on. If the fan does not turn on > > as soon as the compressor kicks on the high side will go extremely high, > the > > condenser will get very hot and in some cases the R-134 may blow out. If > you > > use the port at the top you will not see the high side. It has to be > > connected to the compressor port. Very hard to access unless you have a > > small hand/arm the grille and radiator must be loosened > > > > Glenn > > > > you are right i am using top ports and fan does not cut in . > > > > Bingo!!! your fan module is bad. If you have a scan tool you can actuate the high and low speed. you will probably not have a low speed.And before you install the fan.......connect to the compressor port and you will see how high the pressure is Glenn |
#8
|
|||
|
|||
faulty accumulator PT
"maxpower" > wrote in message ... > > "therebel" > wrote in message > news > > > > "maxpower" > wrote in message > > . .. > > > > > > "therebel" > wrote in message > > > ... > > > > in reply to Glenn, I did not want to influence the reply. ok here > goes, > > > PT > > > > 2.2CRD 2002 model year. 40k on the clock. car came in to workshop > with > > > > burned out compressor clutch. tech replaced compressor and these > > symptoms > > > > started. initial start up ac works ok for about 3 mins, the low > > pressure > > > > gauge on the regas station indicates about 5 bar then starts to rise > > then > > > > drop as the clutch cycles approx every 5 secs. every cycle takes the > > low > > > > pressure up a touch more until the cooling effect stops and the > pipework > > > > feels warm. the high pressure never moves from 5 bar . when > > evacuating > > > > the system the full charge is never removed and has to be repeated > > > several > > > > times. the fixed orifice tube has also been renewed. i am thinking > > > towards > > > > the accumulator but have never experienced a failure in 10 years. > > > > > wrote in message > > > > ... > > > > > anyone have any idea of the symptoms of a bad air/con accumulator > > > > > > > > > > > > > > > > > > > > > 2 questions.......... First question to you is are you using the test > port > > > for the high side gauge at the compressor or at the hose itself? > > > 2nd question..... Does the A/C condenser fan come on as soon as the > > > compressor engages. > > > > > > My guess will be you are using the ports at the hoses on the top and the > > fan > > > does not turn on when the compressor turns on. If the fan does not turn > on > > > as soon as the compressor kicks on the high side will go extremely high, > > the > > > condenser will get very hot and in some cases the R-134 may blow out. If > > > you > > > use the port at the top you will not see the high side. It has to be > > > connected to the compressor port. Very hard to access unless you have a > > > small hand/arm the grille and radiator must be loosened > > > > > > Glenn > > > > > > you are right i am using top ports and fan does not cut in . > > > > > > > > > Bingo!!! your fan module is bad. If you have a scan tool you can actuate the > high and low speed. you will probably not have a low speed.And before you > install the fan.......connect to the compressor port and you will see how > high the pressure is > > Glenn > > cool (pun) but how do you explain the problem with the recovery of the refrigerant? |
#9
|
|||
|
|||
faulty accumulator PT
"therebel" > wrote in message ... > > "maxpower" > wrote in message > ... > > > > "therebel" > wrote in message > > news > > > > > > "maxpower" > wrote in message > > > . .. > > > > > > > > "therebel" > wrote in message > > > > ... > > > > > in reply to Glenn, I did not want to influence the reply. ok here > > goes, > > > > PT > > > > > 2.2CRD 2002 model year. 40k on the clock. car came in to workshop > > with > > > > > burned out compressor clutch. tech replaced compressor and these > > > symptoms > > > > > started. initial start up ac works ok for about 3 mins, the low > > > pressure > > > > > gauge on the regas station indicates about 5 bar then starts to > rise > > > then > > > > > drop as the clutch cycles approx every 5 secs. every cycle takes > the > > > low > > > > > pressure up a touch more until the cooling effect stops and the > > pipework > > > > > feels warm. the high pressure never moves from 5 bar . when > > > evacuating > > > > > the system the full charge is never removed and has to be repeated > > > > several > > > > > times. the fixed orifice tube has also been renewed. i am thinking > > > > towards > > > > > the accumulator but have never experienced a failure in 10 years. > > > > > > wrote in message > > > > > ... > > > > > > anyone have any idea of the symptoms of a bad air/con accumulator > > > > > > > > > > > > > > > > > > > > > > > > > > 2 questions.......... First question to you is are you using the test > > port > > > > for the high side gauge at the compressor or at the hose itself? > > > > 2nd question..... Does the A/C condenser fan come on as soon as the > > > > compressor engages. > > > > > > > > My guess will be you are using the ports at the hoses on the top and > the > > > fan > > > > does not turn on when the compressor turns on. If the fan does not > turn > > on > > > > as soon as the compressor kicks on the high side will go extremely > high, > > > the > > > > condenser will get very hot and in some cases the R-134 may blow out. > If > > > > > you > > > > use the port at the top you will not see the high side. It has to be > > > > connected to the compressor port. Very hard to access unless you have > a > > > > small hand/arm the grille and radiator must be loosened > > > > > > > > Glenn > > > > > > > > you are right i am using top ports and fan does not cut in . > > > > > > > > > > > > > > Bingo!!! your fan module is bad. If you have a scan tool you can actuate > the > > high and low speed. you will probably not have a low speed.And before you > > install the fan.......connect to the compressor port and you will see how > > high the pressure is > > > > Glenn > > > > cool (pun) but how do you explain the problem with the recovery of the > refrigerant? > > Im not an engineer!!! But im sure it has something to do with the port on the line, all I know is you are not supposed to use the upper port. Glenn |
#10
|
|||
|
|||
faulty accumulator PT
therebel Wrote: > anyone have any idea of the symptoms of a bad air/con accumulator This is not a sprint phone with the bar reading.:grinyes: :rofl: :lol: Give us some good old Fashion low and high side pressure readings at idle and at 2000 rpm with ac compresser running. MT -- MT-2500 ------------------------------------------------------------------------ MT-2500's Profile: http://www.automotiveforums.com/vbul...?userid=382930 View this thread: http://www.automotiveforums.com/vbul...d.php?t=615737 http://www.automotiveforums.com |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Faulty Brake Light | [email protected] | Honda | 1 | April 25th 06 11:54 AM |
Faulty Oil Warning Light? | bobjones1000 | Chrysler | 2 | April 23rd 06 12:52 AM |
Found: Triptronic Switch Faulty | [email protected] | VW water cooled | 0 | January 8th 05 12:41 AM |
Faulty Chime | John Normile | Ford Explorer | 1 | November 8th 04 07:35 PM |
Selling a faulty car | Dave | General | 4 | March 1st 04 02:51 PM |