Changed plugs on 2001 Ford Explorer 5.0 95000 Mi. and air filter. Now rough idle. Not before change. Then changed wires. Problem persists. Lightly cleaned the Idle Control Valve and blew out the Air sensor that is located just up-stream from the air filter. Problem is little better but persists. At highway speed, runs great with full power. Old plugs had 4 times the spec. gap. and experienced poor power and bad gas economy with some difficulty starting. Now starts great but after few minutes idle varies 500-800rpm. what's next? TWM
- posted
17 years ago