2003 Pontiac Sunfire?

LETJOH88

MEMBER
2003 PONTIAC SUNFIRE
6 CYL
2WD
AUTOMATIC
79,000 MILES

I have a problem with the AC it was working fine a few days ago, but all of a sudden it wont cool off when parked or when I come to a stop or if I'm going at a slow speed. The AC seems to work fine and cool perfectly when I get some speed. The car makes weird low noises that sound like uninflating a beach ball. Also when I open the hood you notice some type of a tremble at times it seems as if the car's going to shut off. What can be the problem? Thank you any advice will be of great help.

Sunday, July 6th, 2008 AT 4:13 AM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
54,138 POSTS

I would make sure the radiator cooling fan is running, then check the refrigerant levels. Please go over this guide for more help, you may have an AC compressor that is going out.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Here is how to change the radiator cooling fan out in case you find it is not working. And if the system is full of refrigerant then the compressor has gone bad. I have included how to change that out as well. Here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car. Check out the images (below). Please let us know what happens.

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