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2008 Jeep Grand Cherokee

Question: problem starting

Question

Visitor, 3.7L V6, Harrisburg, OR, March 03, 2010, 18:06

Have owned is jeep since aug.09. 3 times Ive had it towed off because it wont start. Everything checks out good just wont turn over. Its been at the dealership for the 3rd time, 15 days now, it only acted up 2 times. They could'ne find out the problem. They say come and get it until it acts up again. Im affraid to take it out of town, you never know when its going to act up! Any clues?

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, March 03, 2010, 19:43
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     Master

    An engine needs three things to run, mechanical integrity (which it must have or it would not restart), fuel and spark. Intermittent problems are sometimes a nightmare to find. To find an intermittent problem like this if it were happening more frequently I would "tee into" the fuel line and tape a fuel pressure gauge to the windscreen so I can monitor fuel pressure when the problem occurs, if fuel pressure falls off you then start tracing the fuel pump, fuel pump relay and sensors that allow fuel operation.
    Your car has good on board diagnostic capabilities, a scan tool connected to the 16 pin socket under the dash should hold information vital to determining what is wrong.
    I am the shop foreman where I work and frequently drive customer's cars home at night or at lunch with a scan tool connected, if the car fails to start I can monitor sensor activity immediately. But I see a lot of fellows ust not interested in finding intermittent problems.

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  • Answer #2

    Visitor, January 24, 2011, 08:29

    Wireless Ignition Node that is your problem. Needs to be replaced

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