GMCtrk

iTrader: (27)

Great time for the A/C to go out, now that temps have reached the90s

Anyways, the clutch is not engaging. I attempted to command the clutch with EFI live, and it still would not activate. The A/C did act funny the past couple of years, it still worked great, but the clutch would cycle very often and had harsh engagement. I was suspicious that it was low on refridgerant with how often it was cycling.

What should be the next step (that I can do at home). Replace the AC relay? Jump the low pressure switch? Does the fact that I cannot command the clutch with the scan tool indicate an electrical problem or in fact the compressor itself has gone bad?

Yes, I did check to make sure my A/C belt was still intact

Thanks!

nonnieselman

iTrader: (10)

check the fuse
check power at the relay
check the relay
check the wires from the relay to the Compressor

smokeshow

iTrader: (16)

I am working on a similar problem with mine. Went to fill the refrigerant last weekend and no response from the compressor...will be working on it this weekend.

nonnieselman

iTrader: (10)

Always check from the beginning first..
If it dont have power, nothing after that is goin to work

GMCtrk

iTrader: (27)

10A A/C fuse is good.

I still need to check power at the relay.

Tried jumping the low side and clutch didn't come on

CashDudeHomie

iTrader: (5)

Gently bang on the top of the relay box.

GMCtrk

iTrader: (27)

I haven't had time to look at it recently due to work. BUt I am highly suspicious that the compression clutch took a ****, just with the fact that it was cycling so rapidly and engaging so harshly over the past couple years. I really do need to check to see if power is getting to the clutch though. Not being able to command the clutch on with efi live or by jumping the low pressure switch makes me think it's something with the compressor itself, although it certainly could be electrical.

Supposed to hit around 100 F sometime early next week.

GMCtrk

iTrader: (27)

Took it to an A/C shop this morning.

Interestingly enough, the compressor is only getting 5 volts. Relay is good.

He put 12volts to the compressor and it came on and it's cooling well. So in a way it's good news no need to replace the compressor, but I do need to track down the electrical problem.

smokeshow

iTrader: (16)

Couple weeks and I will have time to fix mine....til then its a night time vehicle only The Geo doesn't mind though, its got AC!

GMCtrk

iTrader: (27)

I'm actually more of a roll the window down type of person. It's my GF that's been really complaining about the lack of A/C

The only time I really used it last year was in June when it was 105-115. It's a must then