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Nov 19, 2018 | 03:47 PM

Vinford

Thread Starter

Cargo Master

Joined: Aug 2004

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From: Williams Lake B.C.

Smoke

1979 F-150 4x4 with 300 -6 cyl
Battery was dead
Tried to boost it off my pickup.
Sparked like cables were on wrong but they weren't so I clipped them on.
Smoke started barreling out of solenoid on fender well beside the battery?

Nov 19, 2018 | 03:54 PM

caravaggio2000

Laughing Gas

Joined: Apr 2018

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You have a short there somewhere. Inspect all the wiring from battery to solenoid and after it.

Nov 19, 2018 | 04:25 PM

meangreen92

Logistics Pro

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Could a failing alternator cause this as well?

Nov 19, 2018 | 09:15 PM

Vinford

Thread Starter

Cargo Master

Joined: Aug 2004

Posts: 3,455

Likes: 8

From: Williams Lake B.C.

Ill check wiring and unhook alternator , see wh

Nov 30, 2018 | 12:27 PM

Vinford

Thread Starter

Cargo Master

Joined: Aug 2004

Posts: 3,455

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From: Williams Lake B.C.

Put in a new solenoid and it will start when jumped across solenoid.
Wont start with key?

Nov 30, 2018 | 03:37 PM

dlburch

Cargo Master

Joined: Jul 2005

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From: Kansas

do you have voltage on the wire that is connected to the I terminal?

Nov 30, 2018 | 04:18 PM

User 32921

Tuned

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If it's an automatic is it ALL the way into Park?

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Dec 3, 2018 | 05:49 PM

FordExplorerFanatic

New User

Joined: Sep 2017

Posts: 22

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Starter could be buggered. If sparks are flying like a welder then you.may have a shorted starter .

Dec 4, 2018 | 09:19 AM

#10

84espy

Fleet Mechanic

Joined: Nov 2009

Posts: 1,398

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Regarding the battery, I have seen sparking when attaching cables to a battery that was very low on charge.
Regarding the first solenoid: How old was it and how much use did you get out of it? Sometimes the connections on the inside either get worn or break, either leaving a gap for the connection or actually shorting. This may cause smoke.
Regarding the second solenoid, since you were able to jump it to work, I would check the wire going to the S pole. Do you have voltage there when you turn the key?