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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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1997 ford expedition: running rough, like bad timming..ecm..i hooked

Customer Question

i have a 1997 ford expedition running rough, like bad timming. replaced ecm still rough. i hooked up a code readed, indicates nothing. hooked it up to my 2001 f-250 and showed air ratio and fuel ratio. checked all fuses in box under dash, under hood, checked relays that i could find. it runs like timming is off or miss firing. please help
Submitted: 10 years ago.
Category: Ford
Expert:  Fordster replied 10 years ago.
Is the check engine light ever coming on?