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post #1 of (permalink) Old 01-31-2001, 10:32 PM
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Finding a Short???

Well, I know for sure I have a short somewhere. I charged the battery last night fully and set it in there, wont even crank this morning. How do I find where it is? There is 1.6ohms resistence between the power and ground of the truck. Thanks for the help. BTW, no fuses blown either.

Sean Heberly
'85 Bronco 5.8L 4-V XLT: 266K still strong. Winter Truck now.
'86 Pontiac Fiero GT: 4.9L Caddy NorthStar Engine, 11.6 QM @ 107.1 MPH, Poly Susp, KONI's all around, 2 1/2" drop.
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post #2 of (permalink) Old 02-01-2001, 04:46 PM
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Re: Finding a Short???

At least it's not zero ohms! Could be picking that resistance up from the memory in the radio or someting, but if you have a real short then you should get 0 ohms. If you want to find what's using the power, you could pull each fuse and put an ammeter across the fuse and see if there's any current flowing. If no current then not your problem. If there is, then something on that line is eating it. It could be a real short, but just traveling across a dirty or slightly painted surface that's making it not zero. Good luck. By the way, you might start with the big fuses in the engine bay, if there are some, to narrow it down before starting on all 25 or whatever in the cab.

It's a Jeep thing? My Bronco thing will run over your little Jeep thing.

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post #3 of (permalink) Old 02-01-2001, 05:29 PM
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Re: Finding a Short???

If you have a typical battery, it stores about 80 Amp-hours of charge. If it took 8 hours to discharge, then something pulled an average of 10 amps during that time. You don't need to check any circuits with fuses smaller than 10 Amps, since they would have burned and stopped the drain, BUT you should have the battery tested- if it's bad, it can drain itself.

Steve
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post #4 of (permalink) Old 02-01-2001, 09:01 PM
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Re: Finding a Short???

Well, I did that, and found the circuit thats causing it. Its the ALT. I pulled the 10A fuse, and problems vanished. I recently replaced the voltage regulator, and while I had it off, replaced the brushes in there because they were very worn. I can hear a ticking noise within the alternator, and I am sure its an internal problem, not a bare wire or anything. Got any ideas on whats going on? How hard is it to overhaul an alternator? Should I overhaul it, or buy a new one? Thanks

Sean Heberly
'85 Bronco 5.8L 4-V XLT: 266K still strong. Winter Truck now.
'86 Pontiac Fiero GT: 4.9L Caddy NorthStar Engine, 11.6 QM @ 107.1 MPH, Poly Susp, KONI's all around, 2 1/2" drop.
post #5 of (permalink) Old 02-01-2001, 09:16 PM
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Re: Alternator

I used to work in an auto-electric shop, and we never rebuilt Ford alternators; the remans were cheaper than our labor cost. You can probably get a lifetime alt. for less than $80. Just stay out of the Zone!

Steve
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post #6 of (permalink) Old 02-01-2001, 10:10 PM
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Re: Alternator

Where would you suggest, then, Steve? I've always used the zone but I've never tried anything else. Why do you hate autozone so much? Please give us some insight.

It's a Jeep thing? My Bronco thing will run over your little Jeep thing.

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post #7 of (permalink) Old 02-01-2001, 10:43 PM
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Re: Alternator

I would just go get the first rebuilt alternator, Autozone, Carquest, or whatever. Carquest is my favorite, but in a pinch whatever will work. It should be between $39 to $70 or so and take 20 minutes to change. You can fix the diodes and brushes in a Ford alt, but it is more trouble than just changing, imho.

post #8 of (permalink) Old 02-02-2001, 09:23 AM
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Re: The Zone

I've postd this explanation before, but:

I used to get everything there. But after a tie-rod end separated and a U-joint exploded (neither had ever been off-road, and both were less than 6 months old), I took EVERYTHING from the Zone off and got full refunds. Now I specify American or European replacement parts at whatever store I go to, but NEVER the Zone.

Steve
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post #9 of (permalink) Old 02-03-2001, 12:58 AM
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Re: The Zone

Funny you would bring up Autozone...They almost killed me once. I bought a NEW steering rack for my Pontiac Fiero there. They orded it and got it in, I picked it up, installed it and drove on it for about a week. One night after work I got in the car and fired it up to let it warm up. Start pulling out of a parking spot and I have no steering, steering wheel is free wheelin'. I pulled the car right back into my space and left it. Towed it home the next day, pulled the rack out and the gears had already stripped out. I took it back to them, and they told me it would not be fully covered by warrenty since its a rebuilt part. We went around and around about the fact I ordered a new one, and showed my reciept that clearly stated NEW steering rack assemble. That shut him up rather quickly, and they offered to give me a full refund if thats what I wanted. I did so, and now get most all my parts on-line, and at NAPA.

Wow, That was long...

And, as far as my short. I checked and just decided to replace the alternator, was only $81.00. Thanks for help.

Sean Heberly
'85 Bronco 5.8L 4-V XLT: 266K still strong. Winter Truck now.
'86 Pontiac Fiero GT: 4.9L Caddy NorthStar Engine, 11.6 QM @ 107.1 MPH, Poly Susp, KONI's all around, 2 1/2" drop.
post #10 of (permalink) Old 02-03-2001, 07:18 PM
 
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Re: The Zone

Sean

what on-line parts sites do you recommend ?

Malcolm

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