Help! AC Problems and Questions
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 1,156
Likes: 20
From: New Jersey
Help! AC Problems and Questions
The AC in my 91 in not working. When the AC is turned on, the clutch does not engage and spin. Is there any way to direct wire the unit to see if the problem is with the compressor itself and see if the clutch turns on? I am assuming the entire unit is bad, but don't want to put the money out until I am sure.
I already checked the fuses, belt, tensioner, and all seem fine, so i am afraid I am looking at replacing the compressor.
Any help is appreciated.
I already checked the fuses, belt, tensioner, and all seem fine, so i am afraid I am looking at replacing the compressor.
Any help is appreciated.
Race Director
Joined: Oct 2005
Posts: 11,768
Likes: 175
From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
Not an A/C expert, but if the system is low on freon the compressor will not engage.
There is a low pressure switch which prevents you from burning up the compressor.
There is a low pressure switch which prevents you from burning up the compressor.
Instructor
Joined: Jun 2010
Posts: 116
Likes: 2
From: Webster Florida
if the blower control is like mine, to cause the clutch to engage just ground the green wire on the C1 connector. it's the connector with two wires on it... one red and one green. grounding the green wire will engage the clutch.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Which is correct?
Jake
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
'91 is driven by the PCM via a Relay - there's nothing at the Blower Module. Start by disconnecting and reconnecting the Battery which will clear any glitches - or Codes - and then see if it works.
Instructor
Joined: Jan 2010
Posts: 183
Likes: 0
From: Sayreville NJ
Get the freon level checked first, don't go playing with the wires. as stated in an earlier post there is a pressure switch that doesn't allow the compressor to come on unless there is enough freon in the system.
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