OK, Why do I keep frying starter solonoids??? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 04-17-2003, 01:09 PM Thread Starter
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OK, Why do I keep frying starter solonoids???

Since I installed my TFI, I've now fried two Starter solenoids. One when I installed the set-up, and now another today at lunch. I've always fired up quick and easy, and then all of the sudden.... click.. no volts. Thinking it was a bad battery connection, I pulled the cables, cleaned then off, hooked them back up... click, then no volts. no I turn the key and not a damn thing happens....

What should I point my finger at or look to for the culprit that would be frying my solenoids?

thanks
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post #2 of (permalink) Old 04-17-2003, 01:16 PM
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Re: OK, Why do I keep frying starter solonoids???

I think the problem is that you're using a skillet.....everyone knows that solenoids should be boiled, not fried.......LMAO
[img]images/graemlins/chairfall.gif[/img] I crack myself up sometimes.
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post #3 of (permalink) Old 04-17-2003, 02:03 PM
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Re: OK, Why do I keep frying starter solonoids???

I had a similar problem with a SBC TPI. It wouldn’t start, just clicked but wouldn’t turn the engine over. I changed the solenoid and life was good for a few months until the same symptoms reoccurred. I changed the solenoid and had no problems for several weeks but yet again the problem resurfaced. After the third solenoid, I found that it wasn’t the solenoid at all but a bad connection where the lug was crimped onto the battery cable. Each time I changed the solenoid, I disturbed the connection enough that it would make contact again for a while. So, in my case it wasn’t the new solenoid that made the difference, just moving the cable around in the process of replacing it.
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post #4 of (permalink) Old 04-17-2003, 02:34 PM
 
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Re: OK, Why do I keep frying starter solonoids???

I'm wondering what exactly is failing on the solenoid. Is it the coil or the high current side? You will have to test one with a multimeter to see what is happening to them. See if there is continuity between the start terminal and ground. Does the solenoid still click to close the circuit, but just not make good contact anymore?

If the problem is with the high current side of the solenoid, Could there be some problem with the supply voltage to the coil side of the solenoid, caused by your rewiring? Maybe it's not really pulling the solenoid fully closed and it's arcing inside?

Have you torn the old solenoid apart to see what failed?
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post #5 of (permalink) Old 04-17-2003, 02:42 PM
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Re: OK, Why do I keep frying starter solonoids???

1. Two things may be happeing:[*]Bad Grounds [*]Bad Starter
2. In each case the problem is current draw.
3. Have the current draw measured,
4. It's likely exceeding the starter solenoid's ability to handle it.
5. The cure is simple after the cause is defined.
6. Replace the starter, or refurbish the grounds.
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post #6 of (permalink) Old 04-17-2003, 02:53 PM
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Re: OK, Why do I keep frying starter solonoids???

His Jeep is made of plastic...ain't got no "grounds" [img]images/graemlins/grin.gif[/img]
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post #7 of (permalink) Old 04-17-2003, 03:50 PM Thread Starter
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Re: OK, Why do I keep frying starter solonoids???

Ya ya, Dave, at least it's not rusting off the frame [img]images/graemlins/laugh.gif[/img] . Maybe I need to pull aprt the POS battery terminals aon the cablle and make sure i have a good connecction. if that's it then I'm gonna pick up new battery/starter cables and get rid of these stupid cheap ones. The ones that have the strap that clamps the cable to the terminal. Get some good ones that are one piece... Never did like my POS cheapy battery cables.

thanks for the different ideas of what to look for.
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