Blade Macias

iTrader: (16)

wondering if any body else has experienced the problem I'm having with my a/c? It's a new compressor and dryer by the way and it does have the right amount of Freon just charged it yesterday. the compressor does not stay on when the RPM's drop but when i accelerate the compressor runs. don't know if it's tune related or electrical or mechanical. my bros car's doing the same thing. It's a 99 Camaro any feedback would be helpful.

2001AntiVenom

iTrader: (84)

I would double check the freon. Sounds likes its just a little low

chrysler kid

iTrader: (14)

Make sure the pressure is correct, sounds like your high pressure or low pressure switch is shutting off the compressor

Blade Macias

iTrader: (16)

Thanks for the info I will make sure I have the right pressure switch. And triple check the freon thx arthur

01WS6/tamu

iTrader: (37)

If the car is idling too low the pcm will disable the ac compressor. Dirty throttle bodies or tune issues in hot weather can cause this. Double check to make sure the cooling fans are running

The pressure switch for the HVAC is a 3 wire sensor monitored by the pcm it's a digital variable resistance sensor not a switchand tells the pcm liquid line pressure of the HVAC system.

REally need a scanner to check deeper into this and don't start throwing parts at it.

01 WS6 6.0

iTrader: (8)

I have a scanner and hp tuners if you need to scan it, mines doing the same thing ever since it got hot

Blade Macias

iTrader: (16)

Thanks for the info, I have hp tuners just don't know what to look for in the tune or how to adjust it thanks Arthur

Blade Macias

iTrader: (16)

Thanks for the offer, I have hp tuners and access to a scanner just don't know what to look for THX Arthur.

01Z0H6

iTrader: (63)

My Evap canister is freezing up....? AC starts out blowing cold... then doesnt' blow as hard and the can freezes??? What's up w that..?

The Postman

iTrader: (44)

having a similar issue with mine

Start the car and turn on the A/C and nothing happens, hot air blows, but rev the car a little and it kicks in. Once it's on I don't have problems. I'm betting on the pressure switch but I haven't had time to throw gauges on it.

good luck, its hotter than hell

v8

iTrader: (10)

to the OP did you bleed the system with an air pump after you did all that work and add oil as well, if not you could have or will have air in the system.

Blade Macias

iTrader: (16)

we put a vacuum on the system and held it for 15 minutes to check for leaks then added the freon, I can manually kick on the compressor with HP tuner and it gets cold but i let the PCM control it and it will not stay on, my car idols about 900rpm i have to rev it up to 1K for it to come on.

Blade Macias

iTrader: (16)

I will replace the pressure switch again and try it out.

Blade Macias

iTrader: (16)

just a lil update the problem is the tune, Got on HP tuners forums and asked the same questions and a guy told me to check the Stall Saver RPM points and to make sure i have a good steady idle. If the PCM See's the RPM drop below the stall saver rpm set point it will deactivate the A/C compressor, I got that done but if the car surges at idle the PCM will also shut the A/C down so now I have to figure out ho to get a good steady idle, Any info or tips on how to do this with HP Tuners will be helpful. THX Arthur