code 51

  1. Aggiesdm

    3FE code 51 high RPMs...I'm stumped

    Hi all, yesterday after driving my '91 around for a while, I stopped for about an hour and when I started it again, the RPMs at idle jumped up to 1600-1800 RPMs. Prior to this, it had been running fine and idling around 650 RPMS. I initially checked to see if throttle cable was stuck, but it...
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