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Old 04-01-2015, 05:24 PM
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2002 Jeep Grand Cherokee 4.7 ASD problems

My jeep keeps lowing the ASD fuse I checked the relay and it was good' I changed the spark plugs, cam and crankshaft sensors, i keep getting code p1389, I have gone trught 5 fuses so far trying to figure it out I even tried a new pcm and its still keeps doing it I can start it and it runs for about a min and then stats to sputter and cuts off after like the 3rd try it would blow the fuse, I checked all the fuses under the hood and inside the car under the driver side all where good but the ASD fuse keeps blowing.

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Old 04-01-2015, 08:05 PM
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Re: 2002 Jeep Grand Cherokee 4.7 ASD problems

Welcome to the garage.
Knowing which fuse is blowing will help in the trouble shooting. If its fuse #6, then the problem is a short in one of the coils or wiring to the coils. If its fuse #26 (both fuses are in the PDC under the hood), then the problem is a short in one of the injectors or the wiring to them.
The P1389 code only tells that the PCM is not getting power via the ASD relay, which is not so strange, if the fuse every time blows.
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