what causes the fan motor to fluctuate while driving? my heater works so does the a/c

Robert Wolfe
135

Asked by Robert Mar 13, 2013 at 01:19 AM about the 2002 Pontiac Grand Prix GT Coupe

Question type: Maintenance & Repair

2002 Pontiac Grand Prix GT 2dr 3.8L 239k

5 Answers

judge_roy
Not Active

well there is a little goodie called the 'fan clutch' in front of the radiator, in fact is an additional fan...sorta, speeds up when the moto is hot, and cools down when the motor is cool. It's job is to vary with temperature.

Best Answer
tenspeed
49,895

If you are asking about the blower fan motor for the HVAC system, it means that the brushes are too short and the motor needs to be replaced. It's a very easy DIY job on most GM vehicles. Three small screws and a electrical connector.

1 out of 1 people think this is helpful.
Best Answer
judge_roy
Not Active

oops-

Best Answer
tenspeed
49,895

I see green! Happy St Patrick's Day!

judge_roy
Not Active

wow. points!!!

Your Answer

Related Questions

  • Heater not getting hot 9 answers

    I have a 2005 pontiac grand prix. Heater fan works, but blows cool air. We replaced the thermostat but that didn't make a difference. What else could be wrong besides the heater core? Is there any...

    2005 Pontiac Grand Prix GT

    -

    Maintenance & Repair

  • cooling issues, fans wont start 7 answers

    98 grand prix,3.8,. had a blown head gasket, removed the heads had a valve job done, and replaced all gaskets involved with replacing the heads. also replaced radiator, water pump, tstat, ect sensor, ...

    Pontiac Grand Prix

    -

    Maintenance & Repair

  • Fans not working on my 1995 grand prix SE 3.4L 4 answers

    I have a 1995 grand prix se and the fans don't come on at all and the while idle, the temp hand goes redlined and while driving it almost redlines and then comes back down. What should I do.

    1995 Pontiac Grand Prix 2 Dr SE Coupe

    -

    Maintenance & Repair

  • how do I tune up the 3.1 L motor? 6 answers

    the motor is running like it has a miss in it and is lacking power

    1995 Pontiac Grand Prix 2 Dr SE Coupe

    -

    Maintenance & Repair

  • heat & air fan 2 answers

    what would make the coolant fan/ heater/ air not work?

    1993 Pontiac Grand Am 2 Dr SE Coupe

    -

    Maintenance & Repair

Grand Prix
Looking for a Used Grand Prix in your area?
CarGurus has 5,800 nationwide Grand Prix listings starting at $999.
ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 1,480
#2 Tom Demyan
Tom Demyan
Reputation 1,180
#3 John Saffrahn
John Saffrahn
Reputation 770
View All

Related Models For Sale

Used Chevrolet Impala"
1,999 Great Deals out of 59,307 listings starting at $1,250
Used Pontiac Grand Am"
65 Great Deals out of 2,901 listings starting at $999
Used Pontiac Bonneville"
37 Great Deals out of 1,204 listings starting at $1,295
Used Chevrolet Monte Carlo"
86 Great Deals out of 2,716 listings starting at $988
Used Chevrolet Malibu"
1,404 Great Deals out of 58,577 listings starting at $1,599
Used Ford Mustang"
807 Great Deals out of 29,278 listings starting at $1,500
Used Nissan Altima"
1,326 Great Deals out of 73,744 listings starting at $1,000
Used Nissan Maxima"
543 Great Deals out of 20,677 listings starting at $1,200
Used Chevrolet Camaro"
624 Great Deals out of 33,250 listings starting at $1,200
Used Honda Accord"
1,152 Great Deals out of 81,485 listings starting at $1,000

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
34 Great Deals out of 735 listings starting at $3,800
2007 Pontiac Grand Prix For Sale
39 Great Deals out of 786 listings starting at $3,995
2006 Pontiac Grand Prix For Sale
44 Great Deals out of 803 listings starting at $2,250
2005 Pontiac Grand Prix For Sale
24 Great Deals out of 685 listings starting at $1,995
2004 Pontiac Grand Prix For Sale
27 Great Deals out of 938 listings starting at $1,995