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Re: Weak Spark:1,2,3 '91 Explorer 4.0
Posted to Technical Discussion Forum on 8/25/1999 1 Reply

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Is there A problem with the vehicle.??? I would first current ramp the coils to see if I have equal amperage draw between all the coils. What is the sec, resistance. I would not say vac hose testing i... Login to read more.

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