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Re: 89 Ranger no injector pulse?
Posted to Technical Discussion Forum on 7/30/2003

Hi Tom,

Does the ECM communicate with the scann tool, KOEO?

Check the 5 volt reference voltage at the 3 wire sensors, also volt drop the ground wire at the 3 wire sensors. I have seen a PFE short internally and pull the 5 volt reference down to nothing and... Login to read more.