My brothers Monte carlo SS's AC doesn't work, the compressor spins, and he just had it serviced a while ago. Its the v6 3800 series 2 engine. I looked at some stuff and checked some fuses to see if any of that was off but it all seemed ok. Does anybody know what might be going on? I felt the intake and the output lines of the accumulator (I think that is what it is called) and they weren't hot but they weren't cool either. Well thanks in advance for any info.

I think the biggest problem is the v6 and front wheel drive... :D

Sounds like it is low on freon, take it back to the place that serviced it.

Originally posted by Snubnoze:
I think the biggest problem is the v6 and front wheel drive... :D naa, my wifes V6 front wheel drive air conditioner has worked great since 1992
3800's aren't bad engines

Might run a 'hot' wire from the battery to the HOT side of the A/C clutch connector and make sure the clutch engages. If it does, the 'low' pressure switch is probably keeping it off. You'll need to charge system to proper level.

Just had new compressor put in 01 monte, its a bad problem. Mine was under warrety, the A/C compressor in mine was leaking internal. IMO it is a great car but the A/C sure aint like my 73 with R12. If I were you I would see if its over full, should blow 38 degrees from the vents, at least mine does now, for a while. If you have a black interior and exterior it takes alot longer to cool it down because everything in that car is like 150 degrees when the a/c goes to work so its not instant.

I'd check by shorting out the 2 connectors on the pressure switch and seeing if the compressor cycles. If it does, then you probablly need to add Freon. BTW-the R134a conversion is relatively painless.

Originally posted by Sid Coleman:
I'd check by shorting out the 2 connectors on the pressure switch and seeing if the compressor cycles. If it does, then you probablly need to add Freon. BTW-the R134a conversion is relatively painless. A 2000 Monte Carlo already has R134a in it. :D

I'd turn your key to the run position and turn on the a/c to see if the clutch is engaging on the compressor, you should be able to hear the click noise from the engagement. If not, not sure how its wired but see if you got voltage to the compressor, if not check it to the cycling swith, if its to the swith, us a paperclip or somthing to jump the two terminals in the connector on the presure switch to see if the clutch will engage. if it does, dont run it till you make sure you have enough freon in the system, so you dont ruin the a/c compressor.

A/c problems pretty much consist of two types of problems. System related problems and electrical realted problems. All you need is a set of manifold gauges, a test light, multimeter, and maybe a power probe. Before attempting a repair or diagnosis. Check for the proper amount of freon. if you don't you could waste precious hours for nothing. Gauges should read outside temp at rest. EX. temp 80* gauge 80* ~ adjust for temp of engine. Then check gauges at running idle. low side should be 25-45psi~ and high should be 2 x outside temp +20*. If you have freon and no action then it may be electrical. Then you need a wiring diagram and patience start at the compressor and work your way back. Check easist first relays/fuses etc. hope this helped.

how do you check for low freon, all I know how to do is to check the inlet and outlet tube of the accumulator for different temps?

easy if you have gauges. If the psi is lower than it should be, it indicates a low charge. ex.
outside temp 100* car is cold
gauges read 55 psi
vehicle is low