A/C issue.

[hermtm2]

Hi.

My sister has 02 PT which is 110k on it. She haven't driven the car for a while because she just back to the travel. When the A/C was on today, it didn't blow any cold air at all. It was working before she went to. We drove the car about 1 hour and then tried again. There were only normal temperature air not the cold. I tried to charge A/C gas on the system. When I checked the low pressure hose, it showed me 100 psi. What's wrong? How can I fix the A/C problem?

Thanks.

[CREWZIN]

Is the compressor coming on when you turn on the AC? Is the fan coming on when you turn on the AC.

On a Google search of low pressure settings for Chrysler vehicles, your 100 psi is way to high. The pressure sensor is probably turning off the compressor.

[hermtm2]

Hi.

How do I know the compressor is working or not? I tried to search "low pressure settings for Chrysler vehicles" but nothing.

Thanks.

[CREWZIN]

Google "Chrysler AC pressure on low side".

With the AC on and motor running at idle, the engine RPM should raise and lower a little each time the compressor turns on and off.

[ucantcme]

Is it just me, or is it everytime I turn on my A/C (Hot days 95+) my car runs like crap.. Seems like my car is bogging whenever I run the A/C. Getting up to speed on the interstate with the A/C on is quite the task for the PT to handle.

Anyone?

[CREWZIN]

It's not right Ron. I can't tell weather the AC is on or off as far as the engine performance. It should only sap about 3-5hp and you shouldn't be able to tell the difference. If the problem was at idle I'd say check the IAC but your's is a different problem.

[bobs turbo pt]

i agree see if the compressor is coming on and check the 100 psi reading again

[ucantcme]

Originally Posted by CREWZIN

It's not right Ron. I can't tell weather the AC is on or off as far as the engine performance. It should only sap about 3-5hp and you shouldn't be able to tell the difference. If the problem was at idle I'd say check the IAC but your's is a different problem.

Thanks for the response....How about if I added that there is sometimes a little whistle that only happens while pressing the gas with the AC on.

[CREWZIN]

Originally Posted by ucantcme

Thanks for the response....How about if I added that there is sometimes a little whistle that only happens while pressing the gas with the AC on.

Have you actually tested it and listened for the whistle without the AC on? A whistle would sometimes mean air sucking in which translate to a vacuum leak but it would happen with or without the AC.

[ucantcme]

The whistle is only when the AC is on and the gas pedal is being pressed. It might be continous without the gas pedal, but I only notice it w/ the gas being pressed...