Reduced engine power

Asked by Kimi2018 Sep 08, 2018 at 03:14 PM about the 2005 Pontiac Grand Prix Base

Question type: Maintenance & Repair

My reduced engine power light came on while on
expressway. I have a hole in my muffler which seems to be
getting louder. The other day while accelerating onto e-way
the car would not pick up speed. Today I was going 80, light
came on then car slowed down to 60. I got off and shut off
car. Started up after a few seems fine but only drove maybe
45mph or less. Could it be vacuum related? Help please!!!

2 Answers
510

Zdb88 answered 5 years ago

Car needs to have code read. Possible take it to a GM dealer for diag. But the problem may get to be expensive.

Mark helpful
26,245

taver91 answered 5 years ago

Could be as simple as a clogged catalytic converter. Simple to diagnose at a muffler shop but replacement will set you back a few hundred.

Mark helpful

Your Answer:

Related Questions

  • Reduced engine power 4 Answers

    I have a 2004 Pontiac Grand Prix and when I turn the key to start it doesn't crank. It says reduced engine power

    2004 Pontiac Grand Prix

    -

    Maintenance & Repair

  • Reduced engine power 2 Answers

    My reduced engine power light came on while on expressway. I have a hole in my muffler which seems to be getting louder. The other day while accelerating onto e-way the car would not pick up speed....

    2005 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • reduced engine power 2 Answers

    i have a 2005 grand prix, reduced engine light comes on, car has no power, we changed the gas pedal relay, cleaned the throttle body, exaust is new, trans was rebult 2 years ago, i checked all groun...

    2005 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • Engine power reduced 2 Answers

    I have an 05 Pontiac grand prix gtp 3.8l engine not super charged. light came on engine power reduced and there was no check engine light on. I turn the car on but the car just turnt off. I couldn...

    2005 Pontiac Grand Prix GTP

    -

    Maintenance & Repair

  • Reduced engine power 2 Answers

    Ok so I have a 2006 Pontiac Grand Prix I have had it about a year and about a month ago the reduced engine power light came on. I have change the mass air flow sensor and also the throttle body and...

    2006 Pontiac Grand Prix GT

    -

    Maintenance & Repair

Shortcuts

Search Pontiac Grand Prix Questions

CarGurus Experts

  • #1
    munron
    Reputation
    8,130
  • #2
    james sparrow
    Reputation
    7,480
  • #3
    Dorian Hendricks
    Reputation
    6,000
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Pontiac GTO
4 listings
Used Pontiac Bonneville
2 listings
Used Ford Mustang
41 Great Deals out of 1,643 listings starting at $7,999
Used Chevrolet Impala
9 Great Deals out of 130 listings starting at $4,888
Used Chevrolet Monte Carlo
5 listings starting at $9,800
Used Chevrolet Corvette
16 Great Deals out of 722 listings starting at $10,989
Used Dodge Charger
26 Great Deals out of 904 listings starting at $5,995
Used Pontiac Grand Am
1 listing
Used Pontiac G6
18 listings
Used Chevrolet Tahoe
11 Great Deals out of 832 listings starting at $9,980
Used Toyota Camry
44 Great Deals out of 1,134 listings starting at $4,795
Used Buick LaCrosse
4 Great Deals out of 29 listings starting at $6,995

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.