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Car Forum / Subaru Cars / July 200702 Forester AC problem - cutting on and off constantly
02 Forester 2.5L, 120,000 miles. Lately the AC has been really acting up, it usually works okay when first turned on at engine idle but as I accelerate the AC is apprently cutting in and out sporadically to the point where the car runs very rough, jerking. But if I turn off the AC it runs smooth. It will sometimes blow hot air for a bit, and then cut back on and cool normally. Once I get the car up to highway speeds it seems to settle down and cools normally. Thanks for any help! > 02 Forester 2.5L, 120,000 miles. > Lately the AC has been really acting up, it usually works okay when [quoted text clipped - 4 lines] > normally. Once I get the car up to highway speeds it seems to settle > down and cools normally. Thanks for any help! Sounds like a compressor locking up. The next time it does this, stop and open the hood and see how hot the A/C belt is, or if there are "divots" or burnt spots on it. > 02 Forester 2.5L, 120,000 miles. > Lately the AC has been really acting up, it usually works okay when [quoted text clipped - 4 lines] > normally. Once I get the car up to highway speeds it seems to settle > down and cools normally. Thanks for any help! Get the AC serviced before the compressor seizes. The compressor may be low on oil or refrigerant. -- Todd H. 2001 Legacy Outback Wagon, 2.5L H-4 Chicago, Illinois USA > mpar...@mparkes.com writes: > > 02 Forester 2.5L, 120,000 miles. [quoted text clipped - 13 lines] > 2001 Legacy Outback Wagon, 2.5L H-4 > Chicago, Illinois USA OK thanks. It seems to be only happening on very hot days - I drove it into town today and it did fine, never noticed any problems and cooled normally, with the outside temps are low-mid 80's. It seemed to be acting up this past week when the temps were in the upper 90's. Could the outside air temp trigger the problem? Is the oil for the compressor something I can check? >>mpar...@mparkes.com writes: >> [quoted text clipped - 23 lines] > outside air temp trigger the problem? Is the oil for the compressor > something I can check? Maybe the drive belt is old and 'glazed'. Either have it inspected or - as a possible trouble shooting aid, buy some 'belt ease' and spray on it. If the problem goes away - likely the belt is stretched/old whatever. If its the original - probably bad. Depending on mileage, could be bad if its the second one on the car. this does not mean the compressor could'nt be trying to seize though! Carl  Signatureto reply, change ( .not) to ( .net) Are the fans running? If it happens only when accelerating with the car stopped, and on hot days, the high pressure swithc could be cycling on and off, and being high pressure the engine could feel as you described. It could be the compressor seizing up too. When was the AC serviced last? Has anyone added refrigerant overcharging the system? > 02 Forester 2.5L, 120,000 miles. > Lately the AC has been really acting up, it usually works okay when [quoted text clipped - 4 lines] > normally. Once I get the car up to highway speeds it seems to settle > down and cools normally. Thanks for any help! > Are the fans running? > [quoted text clipped - 6 lines] > When was the AC serviced last? Has anyone added refrigerant > overcharging the system? I don't know that the AC has ever been serviced. I just take it to a local Goodyear shop and they perform whatever servcice is recommeneded at specific intervals. Don;t know that I recall AC ever being mentioned though. And no refigerant ever added as far as I know. > > Are the fans running? > [quoted text clipped - 11 lines] > at specific intervals. Don;t know that I recallACever being > mentioned though. And no refigerant ever added as far as I know. I have the same problem with my 2002 Outback. Have you ever figured out what the problem is? |
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