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Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23001
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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F-150: 1997 F150 not sending any codes but missfiring on #5

Customer Question

1997 F150 not sending any codes but missfiring on #5 have replaced coil spark plugs erg valve doesn" start until gets to overdrive
Submitted: 1 year ago.
Category: Ford
Expert:  Gary replied 1 year ago.
Hi there,
Have you done a compression test yet?
Have you swapped the NO.5 fuel injector with another cylinder?
Gary
Customer: replied 1 year ago.
Have replaced #5 fuel injector
Customer: replied 1 year ago.
Dropped one side of catlic converters no change
Expert:  Gary replied 1 year ago.
Hi again,
Have you dona compression test?
Does it have injector pulse on CYL 5?
Maybe your spark plug is faulty? Seen that many times.
OR the spark plug. Did you check their resistances?
Gary