Engine Performance problem
2001 Ford F150 V8 Four Wheel Drive Automatic 109000 miles
I have a 2001 ford f150 5.4L V8. I am having trouble finding a miss in the engine while under a mild load. I replaced the plugs and by process of elimination went through to each coil and swapped out them with a new one. Still have a miss. I had this problem 3 other times before and this worked but this time it did not. Could it be someting else like a sensor? No engine light is on to have trouble code read. Also any ideas why this keeps happening? No moisture is ever present around any plug. I am also getting a whistling noise at 3000 rpms and up inside the cab behind the dash any ideas? No, im not selling my truck. I like it.
Wednesday, December 17th, 2008 AT 10:19 PM