Go Back   DIY Chatroom Home Improvement Forum > Do It Yourself > Automotive Repairs

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-20-2008, 05:04 PM   #1
Newbie
 
Join Date: Apr 2008
Posts: 3
Rewards Points: 10
Default

2002 Pontiac Grand Prix Electrical Problem


I have a 2002 Pontiac Grand Prix (about 70,000 miles). For the last year or so the car has what appears to be electrical problems. About 10% of the time at start up, the fan for AC/heat does not work and the automatic lights do not go on (both at the same time). After about 20 minutes they both kick on. (FYI, I am able to manually turn on the lights at any time.) Numerous mechanics cannot figure this out.

Anyone ever have this problem with Pontiacs? Any possible solutions?

Thanks for any feedback.

bipper is offline   Reply With Quote
Old 04-21-2008, 10:24 AM   #2
Member
 
47_47's Avatar
 
Join Date: Sep 2007
Location: Springville, NY
Posts: 1,483
Rewards Points: 554
Default

2002 Pontiac Grand Prix Electrical Problem


Unfortunately I do not have experience with Pontiacs, but a few things to check.

Was this car ever involved in an accident? You may have a wire pinched/chaffed and corroded.
Has the BCM been scanned for DTC's?
Intermittents are the hardest to find. I suspect either a bad wire, terminal tightness or BCM, but you need to take this to a qualified tech.

__________________
What we've got here is... failure to communicate. Some men you just can't reach. So you get what we had here last week, which is the way he wants it... well, he gets it.
47_47 is offline   Reply With Quote
Old 04-23-2008, 07:44 AM   #3
Newbie
 
Join Date: Apr 2008
Posts: 3
Rewards Points: 10
Default

2002 Pontiac Grand Prix Electrical Problem


Hey,
Yes, the car was in an accident (I was given the car on the cheap and I have noticed evidence of a previous incident).
Thanks for the reply. I will instruct my next mechanic to check the things you have recommended.

Last edited by bipper; 04-23-2008 at 07:49 AM.
bipper is offline   Reply With Quote
Old 04-23-2008, 05:59 PM   #4
Learning by Doing
 
Leah Frances's Avatar
 
Join Date: Jan 2008
Location: Easton, Maryland
Posts: 3,156
Rewards Points: 2,000
Blog Entries: 7
Default

2002 Pontiac Grand Prix Electrical Problem


Check pertinent relays. My volvo's brights would only work if you turned the left turn blinker on first. I found a scorched relay under the dash - trip to the pick and pull: $2.00; working brights: priceless.
__________________
If I could only remember to THINK about what I was doing before I did it.
Leah Frances is offline   Reply With Quote
Old 07-02-2009, 04:55 PM   #5
Newbie
 
Join Date: Jul 2009
Posts: 1
Rewards Points: 10
Default

2002 Pontiac Grand Prix Electrical Problem


I'm not sure if this post will be out of date.
The problem I've had was that I would get high speed only and
when I would try to lower the speed then the AC would quit. I
believe I did find the problem.Locate the HAVC fuse inside the glove box.
(you're goning to need a volt meter for this)When the AC is working check the voltage at the fuse.It should be 12 volts.Next try operating the AC system.(it probably would be better with 2 people for this)If the system
fails ,check the voltage again.It may have dropped to either 2 or 4 volts.
This is because a wire coming from the IGNITION SWITCH that supplies the fuse label HVAC loses voltage because of a problem in the IGNITION SWITCH.The color of the wire is orange.It would be a good idea to do the same test I descibed above to check the orange wire at the ignition switch.
HDVROD is offline   Reply With Quote
Old 07-06-2009, 11:06 AM   #6
Newbie
 
Join Date: Apr 2008
Posts: 3
Rewards Points: 10
Thumbs up

2002 Pontiac Grand Prix Electrical Problem


Quote:
Originally Posted by HDVROD View Post
I'm not sure if this post will be out of date.
The problem I've had was that I would get high speed only and
when I would try to lower the speed then the AC would quit. I
believe I did find the problem.Locate the HAVC fuse inside the glove box.
(you're goning to need a volt meter for this)When the AC is working check the voltage at the fuse.It should be 12 volts.Next try operating the AC system.(it probably would be better with 2 people for this)If the system
fails ,check the voltage again.It may have dropped to either 2 or 4 volts.
This is because a wire coming from the IGNITION SWITCH that supplies the fuse label HVAC loses voltage because of a problem in the IGNITION SWITCH.The color of the wire is orange.It would be a good idea to do the same test I descibed above to check the orange wire at the ignition switch.
HDVROD,
Thanks, my mechanic fixed the problem by doing just that - changing the ignition switch. I am not sure if did this diagnostic procedure. But I hope that it's not just a temporary solution...until it stops working again. It's been a while so I think it's 'cured.'

bipper is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Self induced electrical problem :( domiflichi General DIY Discussions 7 07-10-2008 08:33 AM
Major electrical problem!? Rexkwondo Electrical 7 02-06-2008 04:13 PM
Mystery Electrical Problem sippin Electrical 14 11-07-2007 10:42 AM
electrical outlet problem ? BEN17 Electrical 1 07-29-2007 06:23 PM
Perplexing electrical problem prglor Electrical 4 05-30-2007 02:20 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.