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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23821
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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Have 2004 f 150 with a 4.2 engine. Has misfire under load,

Customer Question

Have 2004 f 150 with a 4.2 engine. Has misfire under load, have replaced plugs,wires,cool pack and ran new wiring from PCM to coil pack. When in park will not misfire, but in gear it is consisitant under medium to hard accretion.
No codes stored?
Submitted: 2 years ago.
Category: Ford
Expert:  Fix It Man replied 2 years ago.
Hello, my name is***** for the question. If I am not online when you return please give me some time to get back to you. Can you tell me how many miles are on the truck? Do you have a scan tool that reads live engine data?