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1995 Chevrolet G Series Van (G30) Question: My 15 amp ECM Fuse Blows When Itry starting my Harley-Davidson Motorcycle

 

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WC111, Moreno Valley, CA, August 04, 2010, 18:34
 Rookie

My ECM Fuse blows everytime when I start the engine after a short stop, like when filling up the gas tank or starting it within 15 minutes after turning the enging off. If I wait 40 minutes or more when the engine cools off, it starts.

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  • Answer #1

    August 04, 2010, 20:41
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     Master

    Sounds like something is heating up and grounding a power circuit to your ECM. There have been some issues with the Dash wiring harness in the GM trucks. I checked the bulletins for harness problems and there are several, but nothing that says there is a magic bullet for any particular problem, other than they have issues with their wring looms.

    here is a link to an online repair manual site, where you can obtain the wiring diagrams for your Van. What I would do is trace all the power sources, in the wiring diagrams for that ECM fuse circuit, there must be something that heats up and allows a hot circuit to touch ground. it could even be an internal circuit to the ECM Do you have any after market electrical devices? That may be a key to your problem, as well.

    http://bit.ly/mitchell_repair_manuals_online

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    WC111, August 05, 2010, 08:19
     Rookie

    Thank you, the Harley dealer is analyzing the possible cause. I do have an upgraded stereo system installed, but I've always had that done on all of my bikes in the past with no problems.

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