LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Starter keeps cranking when battering is connected (key not turned)

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Old Jul 14, 2009 | 06:47 PM
  #16  
shoebox's Avatar
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Joined: Dec 1969
Posts: 27,725
From: Little Rock, AR
Originally Posted by Angelis83LT
No... You tested the circuit within the starter itself. I believe it is always closed, I could be wrong though. One wire is a the hotlead, and the other is a ground wire. when the ground wire is grounded the motor turns. the action of turning the key is what grounds it I would guess. therefor if that is true, then one would think that the there is not an open circuit within the motor? I should get the book out on how they are assembled. Heck. You Could have a short within your ignition switch, which lets the motor start by itself because the ignition switch is shorting.

In fact, a shorting ignition switch would make a whole lot of sense if it is happening with more than one starter.
No, the smaller purple wire is not a ground. It is 12v power when the ignition switch is turned to START. Ground is provided by the mounting/bolts.

What the OP previously posted it that is cranked by itself with no wire on the smaller lug, so it can't be the ignition switch.
Old Jul 14, 2009 | 07:25 PM
  #17  
matLT1's Avatar
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From: Berkley, MI
UPDATE: Think the cause of the issue was the positive lead contacting the small post. The tab on the positive lead that is supposed to be bent at a 90* angle was at ~45* and allowing the positive wire to turn and bump into the smaller post. Read resistance between positive post and small post and it indicated 0.3 ohms. To me this indicates a fryed solenoid due to high voltage going through it.
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