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#90250 04/03/2005 1:13 PM
Joined: Nov 2003
Posts: 285
B
Shop Shark
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B Offline
Joined: Nov 2003
Posts: 285
Hopefully someone out there will have the answers on a problem I am having. I installed a new wiring harness, coil, and resistor block on my 56 3100 w/235. Each time I turn on the key, the resistor block overheats to the point of smoking. The green and brown wires that go to the block do not get hot--only the block. Any ideas? :confused:

#90251 04/03/2005 3:58 PM
Joined: Jun 2004
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W
Riding in the Passing Lane
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Some smoke from anew resister will be normal. the coatings from manufacturing & storage will burn off shortly. If not you may have a wrong coil.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
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#90252 04/03/2005 4:12 PM
Joined: Feb 2002
Posts: 12,029
F
Cruising in the Passing Lane
Cruising in the Passing Lane
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Brian - for starters that ign resistor does get hot - it's job is to cut the voltage to the coil by 'wasting' some of it as heat, and if the key's on for long w/ the motor not running it has to 'waste' it all, that's why it's advised not to leave the ign on long when the motor's not runnin

maybe the smoke is from the cheap ink they use to mark the part# on? or from a bit of oil you got on it even, from your hands? that's part of that 'new car smell', ya know! having worked in electronics, I've always been aware of the smell of a new ign resistor the first few weeks grin

have you checked to insure the connections are tight? loose connections generate more resistance, hence more heat - do you have the old resistor you can switch in temporarily to insure the rest of the wireing is hooked up right? maybe the one you got is the wrong resistance - don't know if the 6v had a resistor, but it'd be different

failing all that, you can always get a newer model coil w/ internal resistance so the resistor isn't required!

Bill


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#90253 04/03/2005 11:23 PM
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Thanks for the replies and good information indeed! When I bought the new coil at NAPA, the clerk looked up the numbers and gave me the resistor block he said was matched to the coil I bought. I had also noticed that the old resister block got hot (maybe normal) also, but did not smoke. The smoke on the new block started right after the initial startup of the motor after a complete rebuild. After the motor was shut off, and key turned back on it started smoking again. I have went back and checked connections, but will again. And red58, if all fails there I might end up getting one of those internal resister coils. Any other thoughts on this would be appreciated.


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