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Old 04-17-2015, 02:36 PM
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2007 JGC 3.7 hard starting when warm

2007 Jeep Grand Cherokee, 3.7 l v-6 hard starting when warm. coils changed, now considering new tipm, fuel pump, key and ignition harness (on recall but no parts in dealership till 9/15, crank position sensor, anything else?

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Old 04-17-2015, 06:48 PM
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Re: 2007 JGC 3.7 hard starting when warm

I would expect a sensor problem. You would need a scanner with live data, to check the different sensor outputs when hot. A bad coolant sensor could cause hard starting for example.
The crank sensor is indeed also one which gives problems when hot.
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