a/c compressor does not work
06-08-2011, 09:49 PM
#1
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Car: 1989 Pontiac GTA/2007 TrailblazerSS
Engine: 350 L98/LS2
Transmission: 700-R4/4L70E
Axle/Gears: 3.27/4.10
a/c compressor does not work
wondering if there is a relay or a fuse for the a/c compressor? it doesn't kick on when i turn on my a/c.
06-08-2011, 09:58 PM
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Car: 1984 Cadillac Brougham
Engine: 1989 Iroc Z 350
Transmission: 700R4
Re: a/c compressor does not work
is it possibly empty of refrigerant? give the schrader valve a quick push with a small screwdriver to see if it has a charge. it should give a high pressure mist. just keep your face away LOL could be your pressure cycling switch also.
06-09-2011, 10:36 PM
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Car: 1989 Pontiac GTA/2007 TrailblazerSS
Engine: 350 L98/LS2
Transmission: 700-R4/4L70E
Axle/Gears: 3.27/4.10
Re: a/c compressor does not work
well nothing came out of that valve lol so could that be the whole issue with my compressor? also, i'm sure it's empty because of some sort of leak too.
06-09-2011, 10:52 PM
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Car: 1984 Cadillac Brougham
Engine: 1989 Iroc Z 350
Transmission: 700R4
Re: a/c compressor does not work
yeah its empty. gotta get it checked out to see whats leaking. if it has been recently serviced, it may have had a fluorescent dye injected, and it will show up real well with a uv blacklight. otherwise, look around the hoses and condenser (rad closest to the front) for any sign of leaking. if u dont see anything, then you will pretty well have to take it to an auto a/c shop to get it leak checked.
06-11-2011, 03:29 PM
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Car: 1989 Pontiac GTA/2007 TrailblazerSS
Engine: 350 L98/LS2
Transmission: 700-R4/4L70E
Axle/Gears: 3.27/4.10
Re: a/c compressor does not work
couldn't i just recharge it and see what happens, if the leak shows up or if has just never been serviced or something? i'm almost thinking somebody had the engine out of it and never did anything with the a/c after they put it back in. not sure though.
06-11-2011, 04:19 PM
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Car: 91 Camaro RS
Engine: empty bay (for now)
Transmission: Built T-56
Axle/Gears: 3.42 stock posi disc
Re: a/c compressor does not work
You can, but if it leaks now, its just going to leak out again, and thats money down the drain. you can have a shop pull a vacuum on the system and that will tell you quick if it has a leak.
06-12-2011, 10:07 PM
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Car: 1989 Pontiac GTA/2007 TrailblazerSS
Engine: 350 L98/LS2
Transmission: 700-R4/4L70E
Axle/Gears: 3.27/4.10
Re: a/c compressor does not work
did the r134 retrofit and charged the system, and it works now. it took 2 can fulls though. and it could probably use more. how much does the a/c system usually take if it's completely empty?
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06-13-2011, 02:49 PM
#8
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Re: a/c compressor does not work
I was told that on R134a retrofits, the system will only need 60%-70% of the R12 charge.
I would err a little on the over charged side if you can't weigh how much gas you're sticking in there. The system needs enough refrigerant to carry the lube around.
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