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Cooling Fan Problems

8 messages,  Last post on Jan 12, 2012 at 2:49 AM

You are in the Pontiac Grand Prix Forum.

What is this discussion about? Pontiac Grand Prix, Engine, Sedan

Messages Page 2 of 2

#2 of 8 relays by 96jewprix

May 23, 2007 (7:53 pm)

try replacing the fan relays under the hood

#3 of 8 Re: Cooling Fan Problems [cassielee1982] by holeshot

Apr 06, 2008 (3:47 am)

Replying to: cassielee1982 (May 22, 2007 5:05 pm)
Try this it works on fords not sure on a pontiac. Take the battery terminals off and turn on the lights and hit the brakes a few times turn the key on this will take all the power out of the system and will make the computer reset itself. You have to leave the cables off the battery for about five minutes. This will turn off the check engine light most of the time. Ford has you bring it in to push a button under the dash for 750 bucks on the f150's back in 1997. Good luck.

#4 of 8 Heating/Cooling Controls by gpgtowner

Apr 18, 2008 (2:22 pm)

I just bought a 97 GT. I quite like it and I got it at a good price because I knew there were a few problems with it as described below:
 
   It has a manual climate control system. It is not automatic or dual zone!
 
1) Fan motor does not work at setting 1, but does work at 2, 3, 4 and 5
 
             Is this the resistor as I am reading here?
and
 
2) The air flows out of the floor, dash and defog vents and does not change no matter what the setting.
 
                Where do I look to fix this problem? I am guessing it will have something to do with a direction panel of some sort?

#6 of 8 2007 Grand Prix Cooling fan by wilburn61

Jun 04, 2010 (4:31 pm)

I have a 2007 Grand Prix with 3800 series III. Drivers side cooloing fan not coming on. Checked conector with voltage meter, no power. Checked relays by switching them and the seem to be fine. 30 amp J-fuse is also ok. Are there other sensors that could be problem. Also if ac is turned on will or should both fans come on?

#7 of 8 Re: 2007 Grand Prix Cooling fan [wilburn61] by wilburn61

Jun 08, 2010 (3:32 pm)

Replying to: wilburn61 (Jun 04, 2010 4:31 pm)
The 2007 Grand Prix update: Direct wired fan. It is ok. Disconected coolant temp sensor still no fan movement. All relays and fuses are good. Followed wire to fuse block and found no power in fuse terminal. Completely stumped. ??? Every thing else on the panel seems to be working.

#8 of 8 Re: 2007 Grand Prix Cooling fan [wilburn61] by oldirty_rabbit

Jan 12, 2012 (2:49 am)

Replying to: wilburn61 (Jun 04, 2010 4:31 pm)
Yes when your A/C is on both fans should run but only part time. Passenger side fan should run constant while A/C is on drivers side fan off and on when thermostat opens.

Messages Page 2 of 2

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