Question about 2001 Jeep Grand Cherokee

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2001 jeep cherokee sport 6 cyl 4 wdr cranks want start

Eng cranks want start . no bus read out on odometer ,no guages , fuel pump runs when jumped out, has fuel pressure ,coil rail readings are within values , changed spark plugs ,checked for burnt wires ,connectors,ect. hooked scanner to obd2 port want pull any codes says no link

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  • Chris Chastain Jul 26, 2009

    not sure if crank sensor would cause all the things this jeep is doing ,what makes you come to this conclusion

  • Chris Chastain Jul 28, 2009

    Thanks for your help crank sensor is bad

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If the data link is not talking to the computer check your ground at the computer and at the data link connector to see if the computer is even alive ground pin 3 on DLC with the key off then turn key to the run position if it flashes the check engine codes record them, if no engine light, does the engine light come on when you turn the key on then go off? if not, check fuses if not check power for pin on computer, if it has power you have a bad computer. But TEST THE GROUNDS IT IS THE BIGGEST FAILURE For these rigs or any manufacture. check that you have power also at the DLC too. if not you need a digital ohm meter and a subscription to http:///.www.alldatadiy.com and start reading the campaigns on that vechile for computer and trouble tree for dead DLC and computer. I don't have that subscription or I could tell you more where to look, if you need anymore help let me know. Also if the crank sensor could cause it not to run the fuel pump but so can the cam sensor. You need to find out if the computer gets it's pulse for the pump at the computer if it does then you need to test them both. There are three wires a ground a colored power wire and a wire to go to the computer you can test these sensors with a meter to see if there is a pulse to each. sometimes the fuel pump gets it's signal from the coil pack so it's important to have the subscription, you can do a search for each item and test them as needed and has a wiring diagram.

Posted on Jul 27, 2009

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Crank sensor bad remove and replace

Posted on Jul 26, 2009

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1 Answer

How to fix 1999 jeep cherokee sport


You mean it cranks but does not start, right ?
The NoBus on the display means the cluster is not talking to the computer. That could be a wiring problem or a component problem.
Have you checked the engine computer for trouble codes ?

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2001 jeep cherokee want start


Dont worry about wire checks at this point. If the "no bus" message went away after disconnecting the sensor, then the sensor is bad. Replace the crank sensor and all will be good in the world again.

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I just had the same problem of my 2001 jeep cherokee not starting with no gauges responding and a "no bus" reading. After reading the responses I changed out the CPS and my jeep now runs great! however, it was not as hard as I thought it would be. Very easy with 7/16 bit and a 10inch extender. In and out in less than 5 minutes. Finding it was the hardest part. Blends in with the bell housing. I did this from under the jeep with a good shop light. I paid about $80 for the part here in Atlanta, GA

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