All times are UTC - 6 hours [ DST ]




Ask A Question Reply   
Author Message
 

contributions: 1
OK i got a 2002 GTP. the cooling fans will work if i unplug them and jump directly from the battery, all fuses are good. I took a 20amp fused jumper and jumped the cooling fan 1 relay from pin 87 to pin 30 and i get a click that comes from under my air box. I believe the engine computer is there. Not sure if i jumped the relay right or not not the best with electrical issues. Any advise is much appreciated. I,m stumped and can,t afford to take to shop


Share on FacebookShare on DiggShare on DeliciousShare on TechnoratiShare on TumblrShare on Google+
   
Reply with quote  
* Search   
 
User avatar

contributions: 2078
Images: 37
Location: Oregon
not working as in the temp gauge gets to the red and the fans are still not running? Or does it just get higher than normal and no fan yet? Does the fan come on when you turn on the ac?


your low speed fan should turn on at 223f
ac fan comes on at about 190psi

high speed fan should come on about 230f
and high ac fan at 240psi

scan for codes. scanner will also show you if there is a fan request or not.

there are three fan relays and two fuses. cool fan 1 relay has power from the cool fan 1 fuse. cool fan relay and cool fan 2 relay both get power from cool fan 2 relay. All the relays get the signal to turn on from the powertrain control module when the temp get hot enough or the AC needs it.

Is your vehicle running warm? Is it because of warmer weather or do you actually have a problem with overheating?


Attachments:
cooling fan.jpg
cooling fan.jpg [ 102.5 KiB | Viewed 553 times ]
   
Reply with quote  
 
I also have the same problem an my code comes up as broken ground? To where an what an how do I fine it to fix


   
Reply with quote  
 
User avatar

contributions: 2078
Images: 37
Location: Oregon
If your car is the same as the one in the diagram the ground wire for the fans and the fan relays are the same. the black wires that go to the ground connection lower left front of engine on the transaxle stud by the starter.

I have tools that plug in and bypass the relays to see if there is a good circuit for the fans to come on at the relay connection. Ir's a good way to see if everything is good on that end of the circuit. Yhen I have relay adapters that go in for the relay and the relay plugs into the adapter. Each prong on the relay is now accessible and I can see what the relay is getting or not getting. Those tools along with the scanner that tells me engine coolant temp and if the PCM is requesting the fan relay on or not ate all important tools to check the operation of the fans.

If it is just a ground problem you could always make a new ground for the circuit if there is an open in the circuit and you can't find where the break is


   
Reply with quote  
Ask A Question Reply   

   Similar Topics   Author   Replies   Views   Most Recent 
New Articles View the first Cooling fans wont run when sensor is plugged in

in Pontiac Grand Prix

Grace

6

497

Thu May 11, 2017 2:59 am

carriedi View the latest

New Articles View the first Attachment(s) 03 3.1l cooling fan not working

in Pontiac Grand Prix

slimsgarage

3

1422

Wed Apr 08, 2015 11:28 pm

carriedi View the latest

New Articles View the first 2002 Grand Prix, 3.1, Noise when accelerating

in Pontiac Grand Prix

goodwinbj

1

536

Thu May 25, 2017 11:26 am

carriedi View the latest

New Articles View the first Attachment(s) Pontiac grand prix low oil level light

in Pontiac Grand Prix

rockin49

1

1215

Tue Oct 27, 2015 10:14 am

carriedi View the latest

New Articles View the first Attachment(s) Pontiac Grand Prix gauges stop

in Pontiac Grand Prix

wildgtp

6

1997

Fri Sep 09, 2016 6:50 pm

guest View the latest

New Articles View the first 2002, 3.1, Grand Prix, ROUGH/SURGING idle at a stop

in Pontiac Grand Prix

goodwinbj

1

169

Mon Jul 31, 2017 10:02 pm

carriedi View the latest

New Articles View the first 1995 Grand Prix Gtp won't idle

in Pontiac Grand Prix

Pipeboy

1

698

Wed Apr 13, 2016 12:46 am

carriedi View the latest


All times are UTC - 6 hours [ DST ]



Search for:
Jump to:  
Contact Us