1989 CADILLAC FLEETWOOD
83,567 MILES
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I have an 89 Cadillac Fleetwood Brogham RWD. Once it warms up mid range 40-45 mph lack of power,then when letting off the gas idle gets so low the stop engine light blinks and comes on and off. I put it in nuteral to speed up the idle to keep the stop engine light from staying on.

I am planning to install a new exhast system could it be a plugged muffler or Cat convertor?

Has new wires,Dist.cap,Rotor, Plugs,PCV value,Fuel Filter.
Oct 23, 2012 at 2:29 AM
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RASMATAZ
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I am planning to install a new exhast system could it be a plugged muffler or Cat convertor? To confirm an exhaust restriction do a backpressure test

Try pulling code/s from the computer and check/test the idle air control valve, throttle position and manifold absolute pressure sensors-

Review this link: https://www.2carpros.com/articles/engine-has-low-power-output
Oct 23, 2012 at 3:27 AM