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    98 explorer no voltage from all o2 sensors

    also, on second thought, while I have those connections open, it would be a good time to check for continuity between the pcm and the wires coming out of the sensors. Would you happen to have the pcm pinout diagram so I know which pin (or pins?) I should check that connect to the signal wires...
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    98 explorer no voltage from all o2 sensors

    Interesting thought... will check as soon as I get the chance... I suppose it is best to check all simple fixes before doing anything too crazy! Thanks for your help!
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    98 explorer no voltage from all o2 sensors

    96eb96, Thanks for your response and sorry I was unable to get back to you faster. I think you are correct that checking the wiring is a good idea. I'm thinking I could pull the pcm wiring harness and check the pins that correspond to the 02 sensors. The only question then is... Which pins are...
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    98 explorer no voltage from all o2 sensors

    and yes, sorry, the obd2 scanner I am using works well and reads all other sensor data correctly, and will read o2 sensor correctly in other cars that are working properly. so I don't think the problem is in the scanner, but thanks for the ideas!
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    98 explorer no voltage from all o2 sensors

    Thanks for your responses! I will try to replace the intake gaskets as soon as possible, but that could take a while as I am a college student right now. (I'm in Nebraska, btw). Anyways, I was just wondering, The intake leak is not that bad, as the engine runs fine except for a little bit rough...
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    98 explorer no voltage from all o2 sensors

    Hello, 1st post here! I have an explorer 4.0 ohv that has 2 codes on it: P0171 and P0174. They are for "system too lean" for banks 1 and 2. When looking at the live data from my obd2 scanner, I see 0 volts and short and long term fuel trims at -100%. I have tried this obd2 scanner on other...
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    Newby Here

    Hello, Just starting out here just bought my first explorer thought I'd join!
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