88whitemanche Posted September 19, 2012 Share Posted September 19, 2012 Hey guys huge problem...monday I was foolinh around.in the engine bay cleaning up wires and I came across the battery wires to the alternator the outer coating was melted I disregarded that because I was going to replace them on yhe weekend...yesterday I het some and go into the house amd something tells me to go back and check those wires luckily I did I caught in time the engine bay was full of smoke and the wires were completely melted down even the ground wires....i replaced every wire with tje 4 gauge from the starter to the alternator even the battery cables but has anyone had this problem before? I'm going to be monitering the new wires but its scaring the crap out of me and ive come along way with this truckk for.it to burn down....please help... Link to comment Share on other sites More sharing options...
jimoshel Posted September 19, 2012 Share Posted September 19, 2012 Wires don't just burn. It takes a short circuit for them to, or an external source of heat. Hopefully you found the short when you pulled the old wiring. You DID find the short didn't you, before replacing the burnt stuff. I make a guess it was the wire from the alternator to the battery, the one with the melted insulation. Link to comment Share on other sites More sharing options...
Pete M Posted September 19, 2012 Share Posted September 19, 2012 I had an alternator short out internally and catch my cables on fire. not fun, especially on the side of the road. Link to comment Share on other sites More sharing options...
88whitemanche Posted September 19, 2012 Author Share Posted September 19, 2012 I really couldnt.find the short it was getting dark and needed all the light needed to put the new wires in plus its my dd...i will be double checking everything later after I leave off work...hope mothing bad happens until then.... And its a new alternator so maybe its putting too much power to the wires? Ps I have to buy tje platic coating for the wires because noticed today the radiator jose makes contact with the wire for the alternator Link to comment Share on other sites More sharing options...
88whitemanche Posted September 19, 2012 Author Share Posted September 19, 2012 I got alot of electrical gremlins on this truck ima have to take off the dash to see if I have any loose ends......i have a dilema when I apply the parking lights my reverse lights stay on even when I turn on thw truck and put it in reverse it doesnt turn on but applies more power to those lights.....ok so the parking lights are on again but truck off and when I put the truck in reverse the fuel pump turns on like if I am trying to turn on the truck but the key is in the off position....any ideas? Link to comment Share on other sites More sharing options...
Keyav8r Posted September 20, 2012 Share Posted September 20, 2012 Check every ground on the truck. Replace all of them that look at all suspect. Heck, just go ahead and replace them all. Search for threads on grounds with info on adding / upgrading grounds. I haven't had my MJ long, but grounds are the next thing on my to do list after I finish floor repairs. Need romget all my lights working correctly. FYI - my daughter had a Honda Prelude that periodically burned wires. I re-wit,Ed half the engine compartment before a Honda mechanic told mr the Preludes had issues with grounds that caused the burnt wires. Added engine to body ground and no more burnt wires.rp Link to comment Share on other sites More sharing options...
88whitemanche Posted September 20, 2012 Author Share Posted September 20, 2012 Awesome thanks Link to comment Share on other sites More sharing options...
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