REDUCED ENGINE POWER

  • Tiny
  • compton85
  • 2005 Pontiac Grand Prix
  • 6 CYL
  • 2WD
  • automatic
  • 70,000 miles

I have a 2005 pontiac Grand Prix. It keeps losing its engine power. I've cleaned throttle body and made it look brand new inside and also put a can of seafoam in the tank. Reduced engine power message keeps coming up as my wife sits in the middle of the road.
Shutting it off for a minute then restarting it helps for awhile then all over again after awhile

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Wednesday, August 24th, 2011 AT 8:37 PM

2 Replies

  • Tiny
  • saturntech9
  • Expert
  • 29,451 posts

You need to take it to a auto parts store like auto zone and have them scan it for codes. Let me know the exact code numbers you probably have a problem in your throttle control system.

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Wednesday, August 24th, 2011 AT 8:40 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,063 posts

You're having an electronic issue likely with the electronic throttle system. You need to get it into a capable shop for diagnosis. The parts are expensive and can leave you stranded if you ignore it.

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Wednesday, August 24th, 2011 AT 8:42 PM

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