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2000 Jeep Cherokee Question: My truck has a extended crank when starting.



bostonmike, 4.0L 6 Cylinder, Winchester, VA, October 14, 2012, 17:31

The truck starts when cold or sits overnight. When the engine gets hot and it sits for 20 minutes, then it has a 6-8 second crank time, before it starts. I have replaced plugs, boots, air filter. I have also replaced the crank sensor and the entire fuel pump assembly. A fuel injection cleaning was also performed by BG. Any suggestions would be greatly appreciated as it has been diagnosed by a couple Master Techs and they have no answers.

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  • Answer #1

    October 14, 2012, 17:53

    check the tps. reading should be .5 to .75 at closed throttle.


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    bostonmike, October 14, 2012, 18:15

    Thanks, I will check that and post my findings. I would of never thought of that. I was also thinking the ECU might be getting hot. Thanks again.
    I finally solved my problem on the extended crank times. #2 injector was bleeding back and causing fuel pressure to drop, I also replaced #1 injector since it had a crack in it. 4 years later, I finally solved this mystery. Good luck to all the Jeep family out there and never give up.

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