08 pontiac grand prix 3.8

Asked by Aug 20, 2015 at 03:19 AM about the 2008 Pontiac Grand Prix Base

Question type: Maintenance & Repair

had car for 2 days then while driving the car just shut off everything worked bot wouldn't turn over the next day we messed with it a few min and it just started and ran fine I got car home and shut it off and it wouldn't turn over again i got my wife to turn key and i tapped on electronic throttle control now when i feather the throttle it starts and is hard to keep running has rough idle sounds bad no throttle response check engine light flashes but pulls up no codes and the airbag lights flicker while its running there was nothing wrong with the car before it died idk if it could be the electronic throttle body, pcm, ecu, i dont wanna replace a bunch of parts that dont fix the problem if someone has had this issue or has any info of what it could be please let me know thank you

3 Answers

109,375

I would first clean the entire throttle body with a good throttle body cleaner, sound like its dirty. if that does not help, I would change it..

70,215

Check the battery cable connections. At both ends. Make sure everything is clean and tight. I had a similar issue with my '00 Grand Prix GT 3.8. The negative (-) battery cable had come loose. All kinds of crazy things were going on. Lights blinking on and off, speedo and tach flopping around, engine chugging, etc. HTH. -Jim

4,235

I agree it sounds like bad electrical connections or a battery that is worn out. You are on the right track though. Don't replace anything until you figure out what the problem is. Diagnostics first, then buy the right part.

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,684 nationwide Grand Prix listings starting at $1,500.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,390
  • #2
    Tom Demyan
    Reputation
    2,990
  • #3
    munron
    Reputation
    2,390
View All

Related Models For Sale

Used Chevrolet Impala
479 Great Deals out of 33,615 listings starting at $777
Used Pontiac G8
12 Great Deals out of 385 listings starting at $4,900
Used Dodge Charger
418 Great Deals out of 27,419 listings starting at $2,495
Used Chevrolet Monte Carlo
15 Great Deals out of 1,304 listings starting at $1,950
Used Pontiac G6
62 Great Deals out of 3,882 listings starting at $1,295
Used Ford Mustang
712 Great Deals out of 38,398 listings starting at $895
Used Chevrolet Malibu
1,073 Great Deals out of 72,017 listings starting at $1,896
Used Dodge Challenger
281 Great Deals out of 21,942 listings starting at $6,900
Used Chrysler 300
325 Great Deals out of 17,503 listings starting at $1,000
Used Honda Accord
1,030 Great Deals out of 60,523 listings starting at $999

Used Cars For Sale

2008 Pontiac Grand Prix Base For Sale
11 Great Deals out of 367 listings starting at $1,991
2007 Pontiac Grand Prix Base For Sale
6 Great Deals out of 268 listings starting at $1,675

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.