power problem

1990 CADILLAC DEVILLE
150,000 MILES • V8 • FWD • AUTOMATIC
Avatar
MACON
  • MEMBER
  • 2 POSTS
1990 Caddy Coupe deville 4.5 Engine. Car slows down on incline.Won't pull a hill. Drives well on flat surface changes gears fine
Jun 10, 2011 at 4:38 AM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Check the exhaust system for restriction could be a clogged catalytic converter -do a backpressure test to confirm it
Jun 10, 2011 at 9:31 AM
Avatar
MACON
  • MEMBER
  • 2 POSTS
Thank you. The auto shop told me the checked the converter and exhust muffler
Jun 10, 2011 at 1:25 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.