Engine Performance problem
1999 Ford F150 V8 Four Wheel Drive Automatic 132000 miles
I have a customer with a 1999 F-150, 5.4l auto with a slight hesitation always, cold or hot. I can re-set the codes but still hesitates all the time and sooner or later code 300 comes back, multiple engine miss or radom engine miss. I have tuned it, a lot of new coils, air filter, fuel filter, pcv valve, replaced 1-injector due to leak ( new inj.), Problem seem to come about after that injector was replaced.
Thank you for any help you may have.
have the same problem?
Thursday, April 1st, 2010 AT 2:38 PM