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Where should i start my troubleshooting for engine trouble code 13 on my 1992 Lexus LS400. i've already checked most of the connecters & wire harnesses & they seem to be ok.

When i left for work my lexus was running great. after about 3 miles & 3 speed bumps i pulled up to a stop sign & the engine started running real bad . It was like it was misfiring on several cylinders. i took my car home & got engine code 13. can someone please help?

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  • Cars & Trucks Master
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Hi Tony, Trouble code thirteen is referring to the RPM signal.circuitry. It can relate to the crank or cam pick up sensors and be a poor connection, but will normally make it difficult for the engine to start once switched off. Check all connections plug coil connections and cam and crank, one or more may simply be loose. and depending how you went over the humps, may simply be disconnected, but unplug and replug each. Appearances can be deceptive. Regards John

Posted on Nov 11, 2014

Testimonial: "thank you john i will do that. where do i find the cam sensors?"

  • Tony Cassity
    Tony Cassity Nov 11, 2014

    I found the cam sensors i unplugged & plugged in the coils

  • Tony Cassity
    Tony Cassity Nov 11, 2014

    &both cam senors & the crank sensor disconnected my battery to clear the code & my car still runs with a really rough idle at all rpms

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