Posted by jeff nwoh on August 19, 2016 at 15:30:18 from (107.11.4.77):
Brother asked me if I would be interested in looking at one of his work trucks. 1994 Chevy 3500HD, 454 gas. Issue is that the truck wont shut off when the ignition is turned off. The truck will stop running if you step on the brake pedal, but I believe accessories, fuel pump, etc.. still stay on.
Their regular mechanic changed the ignition switch, some module on the trans, and cleaned up some grounds to no avail. He really didn't have any more time to mess with it, so its still broke.
Any ideas guys? Some relay somewhere that could be stuck on? Brother did pull the connector off alternator to see if that was back feeding somehow, but no luck. Also, I have a wiring manual for a 94 topkick. Any idea if it would be similar to the 3500HD?
Google wasn't much help. I'm thinking maybe someone here has seen something similar.
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Today's Featured Article - Identifying Tractor Smells - by Curtis Von Fange. We are continuing our series on learning to talk the language of our tractor. Since we can’t actually talk to our tractors, though some of the older sect of farmers might disagree, we use our five physical senses to observe and construe what our iron age friends are trying to tell us. We have already talked about some of the colors the unit might leave as clues to its well-being. Now we are going to use our noses to diagnose particular smells. ELECTRICAL SMELLS
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