Question about 2002 Jeep Wrangler

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Ecm keeps going out i have replaced it 5 times now

I would like to know if ther are any common problems that would cause it to keep shorting out always same area the alt regulater alt is new as is battery

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  • Jeep Master
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Two items to check...make sure you have a good body ground (run a direct line to computer grounds if you need to) Excessive resistance there can overheat regulator. Other thing would be to make sure the battery is fully charged using an external charger, to reduce demand on the charging circuit (alternator is not designed to charge a battery...if partially charged, the system works overtime but will not ever achieve full charge. There is a way to wire in a external regulator, but it will keep the check engine light on and in some states it won't pass inspection.(before you ask, I had the schematic for this but can't find it) I have no idea what they were thinking, putting the reg. in as part of the computer.Next, they will make the directional bulbs only replaceable with the engine!!!

Posted on Jun 16, 2009

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Other people have reported that they cleared the code only for it to return again and again. Keep in mind that most shops can replace the PCM but not all can program it.

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