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1996 Ford Explorer Malfunction - Engine
Question: I own a 1996 Explorer Sport with a 4.0 liter engine. It has 110k on it. About 18 months ago or 12k the check engine light came on. I had it scanned by a local shop and it read bad oxygen sensors. He said it was best to replace all 3 being it was high mileage. I personally did the work myself and replaced all 3 sensors. Cleared codes and truck ran fine up until 2 weeks ago and the light came on again. Brought it back to my freind and he scanned it again. Reads bad oxygen sensors. What could be causing these codes? If "a" sensor is bad can I isolate the bad sensor out of 3 of them without replacing all 3? I'm pretty handy with a VOM if that helps. By the way, it still performs well even with the lit light.
Thanks
James
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Technican: It is criticle to have the trouble code on this one. A lean or rich mixture can set these code(s). So can an underperforming catalytic converter.
Oxygen sensor codes are the most misunderstood of all codes. Get back to us with the exact code (if your friend is temporarily unavailable Autozone will scan the codes free of charge). Here's How To Get Guaranteed Solutions In Minutes
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