Hello, I have a question about my 2002 cavalier 2.2 L SFI. I recently have had problems with the AC. It would kick on and off. I had this problem before and it was the alternator regulator. I had the alternator rebuilt about 6 months ago (just changed the regulator). Everything worked fine after this. The same problem popped up again recently. I tested the alternator/battery. It showed the regulator was bad (assumed bad regulator part-it was chinese and very cheap-the rebuild was done in Mexico) so I now changed the whole alternator for a complete new one. This did not fix the AC problem. The car ran decently before the alternator change (would stall very rarely) and now runs perfectly without the AC on. Only when the AC is on the car runs horribly: RPM's rev on their own, the car jerks forward when idling, lack of power, and the AC will be cold for a few minutes then blow hot air (when crusing at constant high speed it is cool-not cold). I had the AC charged-thinking that it needed gas. This did not fix the problem. Now only sometimes the AC is cold-but not cold like originally just cool then will go hot again. Recently I had a light on the dash come on occasionally. The 'check engine'. It only comes on when I use the AC and I hear a clicking (like the turn signal but faster and it clicks about 4-6 times fast then the check engine light comes on). I load tested the battery and that was fine. I am at wits end about what the problem is and I am sure it is electrical and related to the AC. I used a scanner on the check engine light but no codes came up (I made sure to scan it when the check engine light was on). When idling with AC on the compressor will kick on and off affecting the idle quality and as well the AC is useless in the condition it is in (I live in a very hot place and need AC). Can you please help me diagnose this problem? Thanks, Ryan Pitts
have the same problem?
Sunday, March 18th, 2012 AT 3:24 PM