2005 ford focus 2.0 pzev
Symptom is present when engine is fully warmed up. Worse when a/c is on. Engine light is off and there are no codes saved. 10,000 miles on new Autolite AP104 spark plugs, and coil boots.
All online forums seem to end with no fix/solution for this topic. I am 99% sure a mechanic has seen this problem and it's a common problem. Not sure it's so easy to trace, though. Has anyone fixed this problem before?
Off topic. Could my serpentine belt have lost flexibility/pliability after 150,000 miles? If so is it adding unnecessary load to the engine?
Symptom is present when engine is fully warmed up. Worse when a/c is on. Engine light is off and there are no codes saved. 10,000 miles on new Autolite AP104 spark plugs, and coil boots.
All online forums seem to end with no fix/solution for this topic. I am 99% sure a mechanic has seen this problem and it's a common problem. Not sure it's so easy to trace, though. Has anyone fixed this problem before?
Off topic. Could my serpentine belt have lost flexibility/pliability after 150,000 miles? If so is it adding unnecessary load to the engine?