General Maintenance & Repairs - AC Help




View Full Version : AC Help


1320_Racing
04-16-2012, 07:31 PM
I just replaced my whole system last year with an AC delco Compresser $$$ :mad: and now its not working again.. The weird thing about it is that the other day my battery went dead and after I jumped the car the AC started working again, at least until I turned it off.:bang: Now I cant get it to work again. any help is appreciated.


bigchevyman24
04-16-2012, 07:58 PM
Have you checked the compressor relay? Swap it with the fog light relay... is the compressor kicking on at all? You may have a leak in one of the lines causing 134a loss. If the level is low the compressor will not work. Get a pressure check done on it...

Bird.is.Word
04-16-2012, 08:24 PM
Mine leaks like a bitch. Good luck with your fix OP. I'm curious to see what's wrong with your system.


stevez2885
04-16-2012, 08:36 PM
first thing i would do is check the pressures and/or recharge the system using a robinair machine or similar (not the little cans u can buy at the parts store) then when u know the charge is good, go from there as far as troubleshooting it

1320_Racing
04-16-2012, 10:53 PM
Curious ... Which is the AC relay

DisasterFormula
04-16-2012, 11:21 PM
Should have a diagram inside of the cover for the relay/fuse box.

samson_420
04-17-2012, 10:27 AM
first thing i would do is check the pressures and/or recharge the system using a robinair machine or similar (not the little cans u can buy at the parts store) then when u know the charge is good, go from there as far as troubleshooting it


+1

Pressure 1st then everything else down the line.

bigchevyman24
04-17-2012, 11:22 AM
I do agree with a pressure check. Not necessarily a vacuum check but a pressure check. Go to a shop and get them to vacuum it, and do a dye pressure check. Sometimes a hose will crack lengthwise, and when you pull vacuum it won't leak as it will close in on itself. But when pressure is applied when refilling, it will open up and leak. But first, check the relay. There are two fuse panels under the hood. The fog relay and a/c relay are clearly labeled. Switch the two and see if your fogs work. If so, the relay is good. Then go for the pressure check...

1320_Racing
04-17-2012, 11:14 PM
Can someone tell me which one is the AC and fog light relay, my car is missing the cover/diagram

stevez2885
04-18-2012, 01:02 AM
i wouldnt be worrying about the relay.....sounds like to me either the high or low pressure switch is cutting the system off.....therefore go get the a/c pressure checked