Car problems with reduced engine power

Daniel van Beek

Asked by Jan 09, 2016 at 11:59 PM about the 2004 Pontiac Grand Prix

Question type: Maintenance & Repair

Supposedly my car has terrible oil leaks
that require the entire engine to be
resealed. The car only rlly leaked a little bit
in the fall. But just today I got the reduced
engine power message. The acceleration
doesn't work anymore. The car starts and I
can shift into reverse or drive but I can give
any gas to speed up. Any explanations for
this would be appreciated!

5 Answers


As far as the oil leak is concerned change oil and add Lucas Engine Oil Stop Leak. No promises that it is going to work but it is worth a try. Now for the no acceleration check air filter and replace if necessary clean throttle with throttle body cleaner replace fuel filter add fuel injector cleaner to gas tank.


Call a GM dealer and see if there is a recall out for leaky gaskets on your car. I got a notice recently and they are recalling my '03 for the second time to address that issue. The dealer can check your vin and if there's a recall you'll get it done for free. As for the car being in limp mode (reduced engine power), none of the things suggested by firebird would cause that to happen (sorry firebird). There is something more serious wrong with your car, something that could do it damage if you continued running it at normal power. First check your oil to make sure its not super low. That could possibly trigger it. If that's not it you need to limp it to a shop and have the codes read to see what is going on.

Best Answer

As "munron" said, immediately check your oil level and correct if low.

Daniel van Beek

Yea sadly that wasn't the problem. The car starts and goes in reverse and drive but the acceleration just doesn't do anythin.


And its not going to do anything because its in reduced power mode because there is some other problem that has to be diagnosed. It's not necessarily something expensive, but its not going to fix itself. Next step, read the codes and find out what the car is telling you.

Your Answer

Add photo

Related Questions

  • Reduced engine power light 6 answers

    2008 Pontiac Grand "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 im scared to drive acros...

    2008 Pontiac Grand Prix Base


    Maintenance & Repair

  • Reduced power 1 answer

    I have a 2005 Pontiac Grand Prix, I went to turn it over and I heard a "click" and I lost all power to my car. Popped the hood and wiggled the connectors on the battery and power was restored. Tried...

    2005 Pontiac Grand Prix Base


    Maintenance & Repair

  • reduce engine power 3 answers

    While I was driving my car and pressing the gas pedal it would not rev up or make car go but it never stalled. I would coast to a side street. It's happen 4 times in the past 5 days and the servic...

    2004 Pontiac Grand Prix GTP


    Maintenance & Repair

  • reduced engine power light 19 answers

    I have a pontiac grand prix 2005 the reduced engine ligh comes on (mor so in rain) the car will not excelerate above 30 pmh or so and the it will completley stall out. Usally if I wait 10 to 15 mins...

    2005 Pontiac Grand Prix GXP


    Maintenance & Repair

  • what is reduced power light 3 answers

    reduced power light came on on dash. what is this light and how do I fix the problem

    2000 Honda Passport


    Maintenance & Repair

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 4,388 nationwide Grand Prix listings starting at $1,972.


Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Reputation 3,690
#2 Tom Demyan
Tom Demyan
Reputation 2,450
#3 munron
Reputation 1,960
View All

Related Models For Sale

Used Chevrolet Impala"
934 Great Deals out of 35,802 listings starting at $700
Used Pontiac Bonneville"
860 listings starting at $1,450
Used Pontiac Grand Am"
2,008 listings starting at $1,995
Used Pontiac G6"
144 Great Deals out of 5,677 listings starting at $999
Used Chevrolet Monte Carlo"
14 Great Deals out of 2,069 listings starting at $2,000
Used Chevrolet Malibu"
1,141 Great Deals out of 72,675 listings starting at $695
Used Pontiac GTO"
8 Great Deals out of 515 listings starting at $5,995
Used Ford Mustang"
721 Great Deals out of 41,403 listings starting at $900
Used Nissan Altima"
1,404 Great Deals out of 87,809 listings starting at $1,195
Used Nissan Maxima"
462 Great Deals out of 24,164 listings starting at $800
Used Chrysler 300"
565 Great Deals out of 21,107 listings starting at $1,490

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
16 Great Deals out of 556 listings starting at $2,495
2007 Pontiac Grand Prix For Sale
597 listings starting at $5,500
2006 Pontiac Grand Prix For Sale
6 Great Deals out of 791 listings starting at $2,950
2005 Pontiac Grand Prix For Sale
5 Great Deals out of 505 listings starting at $1,972