Re: 2000 Ford Ranger 4 cylinder Runs Rough at 50 MPH
I replaced the coils because Hanyes Manual recommended a complete tune up including replacing the coils. It cost $102 for the parts, as it is 2 coils, and about 15 mins in time. For some reason it has 8 spark plugs.
Yes I only replaced the rear O2 because it through a code, according to the guys at advance.
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