99 suburban no start kick back

Discussion in 'Domestics' started by Forrest mcpherson, Sep 19, 2017.

  1. Forrest mcpherson

    Forrest mcpherson Newbie

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    Please fill out the following to ask a question.
    Chevy suburban 1999 230000 5.7 turns over but kicks back after replacing cam sensor it was running prior to that but threw a caps code so I changed it. The truck had run hot just prior to the code showing up.
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    DESCRIBE ISSUE....
     
  2. Forrest mcpherson

    Forrest mcpherson Newbie

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  3. jd

    jd Hero Member

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    5.7 - Correct?

    I doubt I'll be able to actually help, but please explain "kicks back." It tries to back down on the starter while cranking? The simple, old school reasons for that are incorrect timing and lean fuel mixture, which could mean low compression, bad valve, etc. Any chance this engine blew a head gasket or burned a valve or piston when running hot?
     
  4. kev2

    kev2 wrench

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    this is a 5.7L ? under engine I see 6.7 Above IDK
    tell us ALL codes. What is a "caps code "
    Are you showing P1340?

    You changed the CAM sensor in the dist?
    I guess you moved dist or removed it - did you resync with scanner ? The dist does NOT control timing but wrong installation could have timing out of spec.

    OR did you change CKP crank sensor at harmonic balancer? If so did you do relearn procedure?

    We love info so these confusing 'details' can be easily overcome = ALL CODES, exactly what sensor, located where, and did you follow reinstall procedures?
     

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