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02-21-2009, 06:05 PM
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#1 |
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Registered User
Join Date: Jul 2007
Location: fort worth, tx
Posts: 22
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negative sparkin
hey all - any help u can provide is appreciated....
---- 1980 k10 350 short bed ---- the other night stopped at the gas station to filler up and she wouldn't start back up - she has always struggled a bit on hot starts i tried to jump it but when i connected my negative clamp to the batt it arc welded the clamp to the top post towed her home thx to a buddy - replaced all the cables today (starter to battery & negative grounds) when i attempt to hook up my negative cable to the battery she starts to smoke and spark again i'd rather not end up like harvey two face - what should i replace? thx JL |
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02-21-2009, 06:58 PM
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#2 |
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Registered User
Join Date: Jul 2007
Location: Ontario Canada
Posts: 1,006
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Re: negative sparkin
I,m thinking your battery is toast
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02-21-2009, 07:06 PM
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#3 |
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The One And Only !!!
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
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Re: negative sparkin
Sounds like you have a dead short in the system, I would start by removing the large battery supply wire from the alternator. Then try hooking the battery cable up, If no sparks the alternator is the problem.
If it the neg. still sparks with the alternator un-hooked start removing fuses one and a time while checking for sparking at the neg. cable. Good Luck
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93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz !  The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. "Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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02-21-2009, 07:57 PM
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#4 |
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One shot, one kill.
Join Date: Dec 2007
Location: Saratoga Springs NY
Posts: 859
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Re: negative sparkin
There is a dead short to ground in the b+ circut. If the smoke\heat is in the large battery cables and no place else trace the cables to insure they aren't cut\damaged. If they are clean disconnect the starter cable at the starter and make sure it's not touching anything and reattech the ground cable to the alt bracket. Little arch is ok. Now touch the small wires that were on the starter to the B+ cable. Small arch is ok. If you do this and get no big archs, replace the starter. jim
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1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shot  Jim or Paladin whichever you choose.
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02-21-2009, 08:10 PM
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#5 | ||
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: negative sparkin
Quote:
Never clamp the final connection to the dead battery (ground) to the actual battery. It should be clamped to another grounding source. The spark that you mentioned can explode the battery right in your face. If you clamp somewhere else, the spark is not directly above the battery.
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You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. 
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02-21-2009, 08:39 PM
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#6 |
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Registered User
Join Date: May 2005
Location: copperas Cove, TX
Posts: 85
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Re: negative sparkin
I had the same thing happen one time. On the back of the alternator, check to make sure the plastic (or rubber) spacer is in tact on the positive stud there. mine shook off and had to replace a ton of wire.
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1976 Red chevy steppy,  Proud service member, US ARMY 15Y, AH-64D Apache Longbow Armament, Avionics, Electronics technician |
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02-22-2009, 04:02 PM
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#7 |
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Registered User
Join Date: Jul 2007
Location: fort worth, tx
Posts: 22
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Re: negative sparkin
so i replaced the starter and it still sparked so i started the narrowing process - (probably should have done this first) turns out ther are two black cables from my passenger side headlight harness that were connected together and then connected to the battery....they both were frayed a few inches down the cable
i cut them off and connected everything up just fine. after some testing i figured out that the two wires i cut supply power to the bright light and the front blinker - my question now....should i make a good cable splice back into the battery like they were or should i route them where the rest of my headlight wiring goes? thx JL |
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