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2002 Volkswagen GTI Repair Question


Topics covered: Battery, Clutch, Coolant.
Mileage: 112 miles.

Asked on July 23, 2012

A/c compressor will not engage

Ice cold in the morning and it just stopped working. I put gages on it and there is no leak, it is still full pressure. I checked fues in cab and on top of battery and they are fine (3 in cab, 3-30 amps on top and one forty). I push in the ac switch and both fans come on as they are suppost to. Compressor clutch is not locked up. I was wondering if it might be the fan control module, I know that tells the compressor to come on, but if that was bad would the fans still come on with ac button on in
side of cab? My coolant was a little low the day it happened my light came on so I topped it off. When I do push in the ac button the car will idle up then down over and over till i turn ac button off. Also I was wondering if my fan control module has a fuse on it somewhere i know some of them have a 20amp and 7.5 amp. I can't see mine with it being under the battery. Thanks for any help! Ben :)
Avatar Asked by bdrew

Answer

Replied on July 23, 2012

Since fan comes on when A/C is turned on, it indicates the fuses are good.
Test the power supply to the compressor. It could be a failed clutch or relay.

Tiny Answered by KHLow2008 (expert)
39,846 answers provided
Replied on July 23, 2012

compressor comes on if i jump it, only relay i know of on the gti is the fan control module Its supposed to turn fans on and ac compressor. do you know of another? it is also the vr6 24v motor. thx

Tiny Response from bdrew
1 question asked
Replied on July 23, 2012

You are correct. There is no other relays except the Coolant Fan Control Module.

Have you tried to check for trouble codes?
Is your system Automatic or Manual HVAC?

Tiny Answered by KHLow2008 (expert)
39,846 answers provided