Engine Performance problem
1990 Cadillac El Dorado V8 Two Wheel Drive Automatic 135000 miles
When ignition turned on, idle speed control motor pulses about 3 times. I can feel it at the gas pedal. Engine starts rough from cold with low idle speed and no power to drive off. Soon warms up, power is good, but engine still misfires on light throttle. When ignition turned off, engine warm, idle speed control motor pulses about 17 times.
Throttle position switch gives correct voltages, have changed idle speed motor and spark plugs. No vacuum leaks found. Any other ideas?
have the same problem?
Friday, February 5th, 2010 AT 2:27 PM