Engine Performance problem
2002 Ford F150 V8 Four Wheel Drive Automatic 205000 miles
I've got an F150 4.6 V8 auto that's running rough but only a small part of the time. I'm NOT getting a check engine light and the problem only seems to come around at about 45MPH and is more pronounced when going up hill at about 45MPH. Does it a little bit at highway speed but not nearly as much. Engine starts and runs fine otherwise. I had the typical coil failure problems a few months ago but that seemed different. It ran bad all the time, gave me a check engine light and a code I could read. Changed some coils and I was all set. I keep expecting the light to come on so I can read the code and change another coil but I don't think it's going to. Injectors? Fuel Pump? Any advice would be helpful.
have the same problem?
Monday, November 2nd, 2009 AT 6:57 PM