Power problem

MACON

MEMBER
1990 CADILLAC DEVILLE
V8
FWD
AUTOMATIC
150,000 MILES

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

Friday, June 10th, 2011 AT 4:38 AM

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check the exhaust system for restriction could be a clogged catalytic converter -do a backpressure test to confirm it

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