1998 Cadillac Seville STS Q&A
1998 Cadillac Seville STS Question: engine idle rough and poor gas mileage
If the wires weren't factory, then they CAN fail in short order. Make the dealership guarantee their work, i.e. if the new wires don't fix the problem, you don't pay. If they balk at this, then they are guessing and take your car to a shop who will stand by their Diagnosis AND repair. I always do at my shop. - dandd
After a mechanic tune up my 2000 Cadillac STS,it idles like it hasn't been tune up. He said he changed the plugs,the spark plug boot,fuel filter,changed the pcv valve,used a fuel inject cleaning ki...