Electrical Ground Issue - Starter - Page 3 - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

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post #31 of 37 (permalink) Old Aug 22nd, 19, 12:24 PM Thread Starter
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Burk
 
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Re: Electrical Ground Issue - Starter

Yes, I cleaned the mounting pad on the block. The new bolt is not too long, the connection is very tight.
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post #32 of 37 (permalink) Old Aug 22nd, 19, 3:31 PM
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Re: Electrical Ground Issue - Starter

If you are following the proper jumper cable procedure, with the last negative connection to something on the block, it would seem to me it is cranking from the second battery. This kind of implies, there is something intermittent between your battery negative and the starter, but you have replaced most of it.

I have a cheap little KD current meter 2423, I would lay that across the cables to see if the starter is drawing current when it doesn't crank. Measure the battery voltage while in the start position and not cranking.

You could also make up something to to see it 12.6V is making it to the solenoid on the start terminal, but that seems OK because it always cranks, when jumped.

It could be that positive battery terminal, because you touch that, and the key every time you actually jump it. I believe everything else but the starter, runs through the little wire on the positive bat terminal.

Mike

Last edited by NuttyPhD; Aug 22nd, 19 at 3:32 PM. Reason: missed word
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post #33 of 37 (permalink) Old Aug 22nd, 19, 4:47 PM
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Re: Electrical Ground Issue - Starter

Quote:
Originally Posted by NuttyPhD View Post
If you are following the proper jumper cable procedure, with the last negative connection to something on the block, it would seem to me it is cranking from the second battery. This kind of implies, there is something intermittent between your battery negative and the starter, but you have replaced most of it.

Mike
This is a good point how there are different spots to hook jumper cables up to. I mostly have it in my head to connect right on the battery post/cable ends but you are correct, there are other ways of doing things.

Jim

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post #34 of 37 (permalink) Old Aug 22nd, 19, 5:08 PM
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Re: Electrical Ground Issue - Starter

Quote:
Originally Posted by NuttyPhD View Post
If you are following the proper jumper cable procedure, with the last negative connection to something on the block, it would seem to me it is cranking from the second battery. This kind of implies, there is something intermittent between your battery negative and the starter, but you have replaced most of it.

I have a cheap little KD current meter 2423, I would lay that across the cables to see if the starter is drawing current when it doesn't crank. Measure the battery voltage while in the start position and not cranking.

You could also make up something to to see it 12.6V is making it to the solenoid on the start terminal, but that seems OK because it always cranks, when jumped.

It could be that positive battery terminal, because you touch that, and the key every time you actually jump it. I believe everything else but the starter, runs through the little wire on the positive bat terminal.

Mike
Quote:
Originally Posted by Jim Streib View Post
This is a good point how there are different spots to hook jumper cables up to. I mostly have it in my head to connect right on the battery post/cable ends but you are correct, there are other ways of doing things.

Jim

Battery or connection at battery. Really, this needs to be load tested. Pull the ignition wire at coil. Test voltages at battery and starter (battery and ign. connections) while cranking engine over. Record and report data.

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post #35 of 37 (permalink) Old Aug 22nd, 19, 5:29 PM
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Re: Electrical Ground Issue - Starter

Quote:
Originally Posted by NuttyPhD View Post
If you are following the proper jumper cable procedure, with the last negative connection to something on the block, it would seem to me it is cranking from the second battery. This kind of implies, there is something intermittent between your battery negative and the starter, but you have replaced most of it.

I have a cheap little KD current meter 2423, I would lay that across the cables to see if the starter is drawing current when it doesn't crank. Measure the battery voltage while in the start position and not cranking.

You could also make up something to to see it 12.6V is making it to the solenoid on the start terminal, but that seems OK because it always cranks, when jumped.

It could be that positive battery terminal, because you touch that, and the key every time you actually jump it. I believe everything else but the starter, runs through the little wire on the positive bat terminal.

Mike
That does makes sense, since jumping it seemed to eliminate the symptom.

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post #36 of 37 (permalink) Old Aug 23rd, 19, 4:11 PM Thread Starter
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Re: Electrical Ground Issue - Starter

Right or wrong, I always jump with all jumper cables attached to the batteries.
So, knowing that, where is the the power coming from? Is it drawing on both batteries?
If true, I should try connecting the negative cable end to my Chevelle block and see if it turns over that way as it would then be drawing on just the battery on the jumper car.
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post #37 of 37 (permalink) Old Aug 23rd, 19, 6:22 PM
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Re: Electrical Ground Issue - Starter

Whether you connect the jumper to battery or the block and the both batteries are connected, you are drawing on both batteries. If the vehicle that's providing the jump is running, you are drawing from both batteries and the running vehicles alternator.

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