Question about 2005 Jeep Grand Cherokee

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Difficulty starting, backfiring, etc. then runs smooth when warm

Our 2000 Grand Cherokee Laredo has been with our mechanic for over a month... backfires and will not start unless the engine is revved until it is warm... then it runs great until the next day... replaced the computer (twice) and examined the engine, timing chain, everything we can think of to no avail. Please help

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  • cariboustew Feb 19, 2009

    It is an 8 cyclinder...

    Will verify the fuel pressure checked...

    Did not have a combustion chamber cleaning done...

    Only code was cam sensor, but that has been there for a long time and our mechanic verified this was not a problem..

    Will verify the air temp sensor checked...

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  • 137 Answers

Is this a 6cyl?
have you had the fuel pressure checked?
have you had a combustion chamber cleaning done?
have codes been read?
coolant sensor and air temp sensor checked?

Posted on Feb 19, 2009

  • 2 more comments 
  • Kirk Feb 19, 2009

    is this a 6cyl?

    have you had the fuel pressure checked?

    have you had a combustion chamber cleaning done?

    have codes been read?

    coolant sensor and air temp sensor checked?

  • Kirk Feb 19, 2009

    is this a 6cyl?

    have you had the fuel pressure checked?

    have you had a combustion chamber cleaning done?

    have codes been read?

    coolant sensor and air temp sensor checked?

  • Kirk Feb 19, 2009

    is this a 6cyl?

    have you had the fuel pressure checked?

    have you had a combustion chamber cleaning done?

    have codes been read?

    coolant sensor and air temp sensor checked?

  • Kirk Feb 19, 2009

    is this a 6cyl?

    have you had the fuel pressure checked?

    have you had a combustion chamber cleaning done?

    have codes been read?

    coolant sensor and air temp sensor checked?

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