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  1. C

    Check Engine light

    Okay, I went to Autozone and had them read the codes. He printed the codes for me and it show numbers of P1120, P1121, and P0121. They say "throttle position sensor out of range", "throttle position sensor circuit intgermittent high voltage" & "the pch has determined that the actual input from...
  2. C

    Check Engine light

    I need help. I have a '99 Explorer, and have had many problems lately. Recently the thermostat was changed by my father in law and it worked fine for a few days, until my husband saw smoke, and it had been a valve or tube or something not clamped completely, which he fixed and no more smoke, but...
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