Engine Performance problem
1988 Ford F150 V8 Two Wheel Drive Automatic 100000 miles
I have a 1988 F-150 I failed inspection 3 times. I relpaced pvc valve, plugs, idle air control valve TFI module and two cats yet it still fails on high NOx on high rpm drove it about 100 miles on new cats installation what am I misssing. Truck runs like a new truck but failing inspection. The only thing I have'nt changed is the o2 sensor, my engine light comes on after engine heats up. Also truck jerks when I press on gas and while i'm driving but all the time. I changed fuel filter also.
have the same problem?
Sunday, April 4th, 2010 AT 2:54 PM