problems

Asked by Jul 05, 2016 at 06:27 PM about the 2006 Pontiac Grand Prix Base

Question type: Maintenance & Repair

this car sometimes will not start and other times the power drops down while
driving it.  We got a couple codes off of it.  P1125  and P2138.  I went to the
parts store a friend of mine owns and he said this car doesn't show a throttle
position sensor.  the other parts store said yes it does...2 of them.  How do
you tell which one is bad if there is 2 of them.  Or any help will be appreciated.

4 Answers

95

best bet is to change the throttle body assembly. not too expensive on amazon. if that doesn't work change the gas pedal. but since you said the car wont start sometimes it's more likely a bad throttle body position sensor. if money is tight cleaning the connectors with contact cleaner may help.

4,455

Best bet is not to just start randomly changing part hoping to miraculously solve a problem. Best bet is to do some more diagnosis to find the actual problem. Checking for trouble codes is a good start. Now its time to take it to a shop and have an actual technician evaluate what those codes mean and probably do some further diagnostics. A few dollars spent there will save you hundreds on un-needed parts.

95

theres nothing random about it. the codes have it fairly narrowed down. taking it to the shop to have it further diagnosed will be more than 4 times as expensive as changing a $150 part. I understand your point. but I thought the point of this website was for people who like fixing their own cars

4,455

You're right. There are times when it makes sense to just change out an inexpensive part instead of spending a lot of time and money looking further. I have my doubts that the type of diagnostics that are needed here would cost $600 though. And, as was noted there is considerable doubt about whether that's what's really wrong. The purpose of this site is to give guidance to a wide range of people who come here looking for help. Some are do it yourselfers, but many are simply people looking for help, and often the best help us "gurus" can give is to counsel them to seek professional help.

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,653 nationwide Grand Prix listings starting at $1,450.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,470
  • #2
    Tom Demyan
    Reputation
    3,110
  • #3
    munron
    Reputation
    2,500
View All

Related Models For Sale

Used Chevrolet Impala
571 Great Deals out of 34,341 listings starting at $890
Used Dodge Charger
446 Great Deals out of 32,879 listings starting at $1,999
Used Pontiac Bonneville
487 listings starting at $1,799
Used Chevrolet Monte Carlo
11 Great Deals out of 1,252 listings starting at $1,488
Used Ford Mustang
601 Great Deals out of 38,611 listings starting at $1,895
Used Pontiac GTO
5 Great Deals out of 446 listings starting at $4,995
Used Pontiac Grand Am
1,075 listings starting at $1,800
Used Chevrolet Malibu
1,039 Great Deals out of 60,989 listings starting at $880
Used Pontiac G6
44 Great Deals out of 3,884 listings starting at $1,200
Used Chrysler 300
324 Great Deals out of 19,325 listings starting at $900
Used Honda Accord
1,095 Great Deals out of 71,808 listings starting at $850

Used Cars For Sale

2008 Pontiac Grand Prix Base For Sale
10 Great Deals out of 386 listings starting at $1,750

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.