1995 Pontiac Grand Prix auxiliary fan

80,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ANTON74
  • MEMBER
  • 8 POSTS
Hello,
I have a Pontiac Grand Prix 95, 3.1L engine. Recently, I found that the auxiliary cooling fan (passenger's side) does not run when I turn on the A/C. Instead of this, the primary fan is running. I checked the relay and the fan (by jumpering its wires), both of them are working properly. I checked the power on the relay contacts with a test lamp, it appears to be OK. It seems that the auxiliary fan relay does not get a ground when the A/C is turned on. Is there any problem or the auxiliary fan is not supposed to run with the A/C?
Thank you,
Anton.
Nov 4, 2008 at 6:58 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
See below-if all the fuses checked out-could be the computer control of the relays


https://images.2carpros.com/forum/automotive_pictures/12900_ac1_1.jpg


https://images.2carpros.com/forum/automotive_pictures/12900_ac2_1.jpg

Nov 5, 2008 at 6:58 AM
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