Why does my 1999 4.6L Chevy truck engine run sluggish on hills and when passing another vehicle

1999 CHEVROLET TRUCK
114,000 MILES
Avatar
KORR
  • MEMBER
  • 2 POSTS
Idles smooth, runs fine around town. Runs sluggish on hills and when passing another vehicle. Seem like it has a governor on the throttle.
Jan 11, 2012 at 11:42 PM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Have the exhaust system checked for blockage-also the TPS and MAP sensors
Jan 11, 2012 at 11:45 PM
Avatar
KORR
  • MEMBER
  • 2 POSTS
Thank you very much, the dealer couldn't even find the problem. I'll let you know what I find.
Jan 11, 2012 at 11:50 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.