power problem

1990 CADILLAC DEVILLE
150,000 MILES • V8 • FWD • AUTOMATIC
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MACON
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  • 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
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RASMATAZ
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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
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MACON
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Thank you. The auto shop told me the checked the converter and exhust muffler
Jun 10, 2011 at 1:25 PM
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