Reduced Engine Power 2008 Grand Prix

Asked by Oct 30, 2014 at 11:17 PM about the 2008 Pontiac Grand Prix Base

Question type: Maintenance & Repair

I have a 2008 Grand Prix. for the last two
weeks or so the reduced engine light has
been signaling I can go as fast as I want
but it takes a lot longer to speed up the
RPM's don't go over 1500 and when I shut
the car off and turn it back on the whole car
will shake. I took it into the shop but they
said everything looked OK with the
computer. I don't understand why it
happens so randomly I can be going 60
miles an hour or 20 and it just happens
randomly any ideas or suggestions would
be greatly appreciated. I don't know what
else to do. This is the only vehicle I have
owned I have had it for 4 years now and
this just recently started happening.

2 Answers

17,460

Catalytic converter might be plugged?

25

Have the shop check the throttle body sensor or the throttle body position? . That's what was wrong with mine. Bout 600$ to fix. But my car did the same exact thing.

Your Answer

Add photo

Related Questions

  • Reduced engine power on a 2008 Grand Prix 75 answers

    I have a 2008 Grand Prix, that worked great until last march when i put it in the ditch. it got all fixed from that. But just this past week i was driving it and it came up with REDUCED ENGINE POWER...

    2008 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • Reduced engine power light 6 answers

    2008 Pontiac Grand Prix..my "reduced engine power" sign came on along with the engine light..i was in an residential area so i wasnt goin too fast, maybe 35 or 40 mph..now im scared to drive acros...

    2008 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • I have a 2008 Pontiac Grand Prix that is giving me an error message of "reduced engine power." Why? 5 answers

    I was just driving to work one morning and the check engine light came on and I got the error message of "reduced engine power." I suddenly had not power when I stepped on the accelorator. My husband ...

    2008 Pontiac Grand Prix

    -

    Maintenance & Repair

  • Reduced power 2 answers

    I have a 2008 grandprix rough idol , accelerating without touching gas pedal while it is doing this you can tough the gas pedal and it doesn't work accelerates up to 50 Mpr , reduced engine power ...

    2008 Pontiac Grand Prix Base

    -

    Maintenance & Repair

Search Pontiac Grand Prix Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,890
#2 Tom Demyan
Tom Demyan
Reputation 2,580
#3 munron
munron
Reputation 2,060
View All

Related Models For Sale

Used Chevrolet Impala
904 Great Deals out of 35,275 listings starting at $1,700
Used Dodge Charger
468 Great Deals out of 30,103 listings starting at $2,275
Used Pontiac G8
17 Great Deals out of 456 listings starting at $5,800
Used Pontiac G6
76 Great Deals out of 5,050 listings starting at $1,295
Used Chevrolet Monte Carlo
18 Great Deals out of 1,692 listings starting at $2,491
Used Chevrolet Malibu
1,133 Great Deals out of 82,881 listings starting at $2,328
Used Ford Mustang
534 Great Deals out of 42,736 listings starting at $1,699
Used Nissan Maxima
381 Great Deals out of 24,382 listings starting at $999
Used Nissan Altima
1,072 Great Deals out of 82,591 listings starting at $1,988
Used Jeep Grand Cherokee
907 Great Deals out of 66,336 listings starting at $1,500

Used Cars For Sale

2008 Pontiac Grand Prix Base For Sale
9 Great Deals out of 414 listings starting at $900