What fuse and which wire do I use to hook my cooling fans up to.

Asked by Sep 13, 2013 at 08:26 PM about the 2004 Pontiac Grand Am SE

Question type: Maintenance & Repair

Neither fans will kick on at all. The
car runs over 200 constantly and
gets hotter in town. All the fuses and
relays are good and I had the temp
sensor replaced. I've had two
different mechanism tell me it's an
electrical issue they can't fix it. The
only other thing I can think of to get
them to run is hook them strait up to
the alternator or a fuse. The fans run i
hooked them to the battery. I've had
to replace my resivoir twice now it
keeps cracking because of the heat.

1 Answer

465

Veronica: It sounds as tho you have a *control side* circuit issue with the fans. If the fan motors can be engaged by taking them directly off the battery then there is nothing wrong with them themselves. Try this...(if you can't do it yourself get someone who can)....locate the relays for the fan motors (they should be in the electrical center under the hood)....pull the relays from their sockets....with a jumper wire bridge the 12v battery source terminal directly to the terminal that feeds the motors. The battery should be pin #30 on the relay blade terminal and the fan motors should be pin#87. If the fans come on by jumpering then there is a problem on the *control* side that the ECM takes control of. That would need to be diagnosed to locate the source of the problem. It could be faulty wiring/failed ECM sensor or something more serious, but it's NOT impossible to correct.

5 of 5 people found this helpful.

Your Answer

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    8,000
  • #2
    John Saffrahn
    Reputation
    1,630
  • #3
    Tom Demyan
    Reputation
    1,620
View All

Related Models For Sale

Used Pontiac Grand Prix
10 Great Deals out of 2,358 listings starting at $1,900
Used Pontiac G6
29 Great Deals out of 3,646 listings starting at $1,000
Used Ford Mustang
342 Great Deals out of 41,799 listings starting at $1,488
Used Chevrolet Impala
483 Great Deals out of 31,772 listings starting at $1,000
Used Pontiac GTO
3 Great Deals out of 391 listings starting at $3,950
Used Chevrolet Malibu
983 Great Deals out of 53,481 listings starting at $1,599
Used Pontiac Bonneville
397 listings starting at $1,995
Used Toyota Camry
1,115 Great Deals out of 77,076 listings starting at $1,100
Used Honda Civic
584 Great Deals out of 52,614 listings starting at $999
Used Honda Accord
790 Great Deals out of 89,574 listings starting at $1,444

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.