Thursday, July 18, 2013

Chrysler PT Cruiser Street Cruiser: Air Conditioner Not Working

2008 PT Cruiser no cold air From A/C

Air Conditioner Not Working

Air conditioning allows the removal of heat from inside the vehicle. The basic principle used is that the heat is removed by the method of transferring and convection. An evaporator which is cold soaks up the heat from the air that is transferred through it and then cold air is pressured out via the vents inside the car by the blower motor. This is done by pressurizing refrigerant(Freon) (134a) with a compressor and then releasing refrigerant (134a) inside the air conditioner evaporator. There are many factors your air conditioner can blow warm air. A basic a/c gauge and test light is required to help identify most air conditioner problems.

With the engine running and the A/c button turned on - the a/c cmpressor should be on.
A/C Compressor Parts and Components:
Chrysler Pt Cruise A/c Compressor Removal Diagram

Troubleshooting:

I'm assuming the blower motor works fine but the air just doesn't cool? If that's the case then it won't be a blown fuse. There aren't any fuses used for the compressor clutch.

There are quite a few possibilities for the a/c not working.

It could be low on charge, it could be a bad low or high pressure switch, the TIPM (module/fuse box under the hood), wiring, etc.

The most common cause of a/c not working is low charge, but pressure switch and TIPM issues on these cars aren't uncommon.

The first thing that should be done is check the charge level. If it's low then pressure switches won't close and the compressor won't engage.

If it's ok then the pressure switches will need to be looked at next.

This will help.
Thanks.

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