2003 Pontiac Grand Prix SE 3.1....has no power

Asked by namtrow101 May 08, 2016 at 03:11 PM about the 2003 Pontiac Grand Prix SE

Question type: Maintenance & Repair

have replaced EGR Valve...Down Stream O2 Sensor...Spark Plugs...Exhaust Header Gasket....and now has less power then before...engine runs

1 Answer
42,455

Auto_Centric answered 8 years ago

The upstream 02 is the sensor that helps control fuel ratio, downstream is just a monitor of catalytic converter efficiency. Have it read for codes, even if the check engine light is NOT on the computer will have stored information and codes. Discount auto stores will read codes for no fee. write them down.

Mark helpful

Your Answer:

Related Questions

  • 2003 Pontiac Grand Prix SE 3.1....has no power 1 Answer

    have replaced EGR Valve...Down Stream O2 Sensor...Spark Plugs...Exhaust Header Gasket....and now has less power then before...engine runs

    2003 Pontiac Grand Prix SE

    -

    Maintenance & Repair

  • are parts for a 2002 pontiac gtp interchangable with a 2003 pontiac grand prix se? 5 Answers

    i need to know if a 2002 grand prix gtp has interchangeable parts with a 2003 pontiac grand prix se body parts wise like hood,headlights,ect.thanks so much for your help

    2002 Pontiac Grand Prix

    -

    Maintenance & Repair

  • Pontiac grand prix se 3.1 coolant problems 10 Answers

    Ok so I have a 2002 pontiac grand prix se 3.1. I'm kinda lost at what to do since I'm not a car guy, I do have mechanical abilities as I have fixed a couple things already on vehicles. But I was w...

    2002 Pontiac Grand Prix SE

    -

    Maintenance & Repair

  • Pontiac Grand Prix SE 2002 3.1 High Pitch Squeak when accelerating 6 Answers

    Hello, my Pontiac Grand Prix SE 2002 3.1 squeaks (high pitch) really bad when I accelerate above 2000 RPM, if you leave the gas pressed, it keeps doing it and it doesn't go away, it only goes away w...

    2002 Pontiac Grand Prix SE

    -

    Maintenance & Repair

  • 03 pontiac grand prix no power 9 Answers

    The car starts with a jump but dies shortly after I remove the cables. I went ahead and picked up a new battery for it and it ran for maybe a day after that. So I had the alt checked and it tested...

    2003 Pontiac Grand Prix SE

    -

    Maintenance & Repair

Shortcuts

Search Pontiac Grand Prix Questions

CarGurus Experts

  • #1
    munron
    Reputation
    8,230
  • #2
    James Sparrow
    Reputation
    7,530
  • #3
    Dorian Hendricks
    Reputation
    6,190
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Pontiac Bonneville
1 listing
Used Chevrolet Impala
7 Great Deals out of 93 listings starting at $3,531
Used Pontiac GTO
3 listings
Used Chevrolet Camaro
14 Great Deals out of 282 listings starting at $5,995
Used Pontiac Grand Am
1 listing
Used Ford Mustang
60 Great Deals out of 1,365 listings starting at $4,995
Used Pontiac Firebird
14 listings
Used Chevrolet Corvette
22 Great Deals out of 1,084 listings starting at $15,000
Used Buick Regal
4 Great Deals out of 40 listings starting at $4,991
Used Chevrolet Monte Carlo
5 listings starting at $9,449
Used Jeep Grand Cherokee
113 Great Deals out of 3,142 listings starting at $3,995
Used Chevrolet Silverado 1500
222 Great Deals out of 5,872 listings starting at $2,975

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. Content will be removed if CarGurus becomes aware that it violates our policies.