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Thread: AC doesn't work.
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08-06-2018, 12:24 AM #1
- Join Date
- Jun 2006
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- B.C. Canada
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- 48
- Posts
- 30
Black- 2000 Pontiac Firehawk TA
AC doesn't work.
So I tried my AC for the first time and it doesn't turn on. Fan blows but not cold and I can't hear or see a voltage drain. I checked the fuse and relay, all good. Any ideas what else to check ??
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08-06-2018, 10:38 AM #2
Is your compressor clutch engaging? If you turn your AC on to max and have someone hold your RPM's to 2500, can you visually see the clutch engage? If not you may possibly be low on freon. You can get a can of refill and see where your pressure sits. If it's fine then it may be the pressure switch failed possibly.
98 WS6 M6 ASC #2647
Forged Custom 408 w/Vortec YSi
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08-06-2018, 01:51 PM #3
- Join Date
- Mar 2007
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- Henryetta/Tulsa Oklahoma
- Age
- 39
- Posts
- 3,675
2016 Camaro SS - Summit- 2001 Trans Am WS6 - NBM
Here's the typical stupid IT "Is it plugged in?" question. Is the secondary belt present on the car? My old SS would occasionally spit out an AC belt.
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08-06-2018, 04:55 PM #4
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- Sep 2005
- Location
- neverland
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- 74
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- 11
red- 99 formula
Actually, the two times my ac stopped from mile 7 to 260,xxx was once for lost belt, and once for low on Freon.
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08-06-2018, 09:42 PM #5
- Join Date
- Jun 2006
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- B.C. Canada
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- 48
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- 30
Black- 2000 Pontiac Firehawk TA
Belt is there for sure. Will low freon cause it to not come on at all ?
2000 Firehawk - LS6 - SLP Headers, subframe connectors and strut tower brace
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08-07-2018, 03:15 AM #6
Yes, there is a low pressure switch that interrupts the circuit if there is insufficient pressure in the system. You can usually jump the switch to see if the clutch then engages. It is either then low pressure or a faulty switch.
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08-07-2018, 07:48 AM #7
- Join Date
- Jun 2006
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- B.C. Canada
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- 48
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- 30
Black- 2000 Pontiac Firehawk TA
Thanks fellas, I'll get it recharged and see what happens.
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