1999 Jeep Grand Cherokee Logo
Anonymous
Anonymous Posted on Oct 19, 2009
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Hard starting or will not start.once started idiols real rough

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  • Anonymous Oct 22, 2009

    replaced cam shaft senser had a po340 code. still havig same problm. also replaced plugs

  • Anonymous Oct 22, 2009

    replaced cam shaft sencer due to code po340. also replaced plugs and still having same problem. it also shakes and shutters till it dies

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Andy Lebel

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  • Expert 94 Answers
  • Posted on Oct 24, 2009
Andy Lebel
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Joined: Oct 20, 2009
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Check our Idler ( the black item right under he TPS at the trottle body) for function and clean them. If this don't works, check your fuel pressure (right cylinder bank, between 3. and 5. injector is a connector) you need 49 to 52 PSI. Check for stored trouble codes (ignition on, till bulb check is over), off-on four times, miles display will change in Trouble code mode. If there are any codes stored, you will get P and four digits, after finished you'll get "done". If there are no codes stored you'll get immediately "done" . If there are some codes stored, pleasy come back again with the numbers

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