hello hope someone can help me. i have a 1992 cadillac coupe deville that idles extremley rough. it drives ok slight hesitation from a dead stop but other than that its ok. i have replaced distributor cap rotor and coil. new plugs and wires. fuel injectors have been cleaned.i dont hear any "hissing sounds". i have done a compression check and all eight read between 130 and 150. i am hearing a exhaust rumbling. can it be possible that the exhaust system is the cause? any help would be greatly appreciated i am new to this area and have not found a mechanic yet i can trust. oh yeah no codes just .7.0
Apr 21, 2012 at 5:43 AM
