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1990 intermittent start problems.

Old May 29, 2025 | 04:33 AM
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1990 intermittent start problems.

Hello, can someone post a starting circuit diagram for a 1990 iroc z? Having intermittent starting problems. First thought it was vas... then heat soaked starter... but not to sure. Would like to troubleshoot and backtrack.
also, any tips on how to efficiently test is appreciated.
Thanks.
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Old May 29, 2025 | 04:42 AM
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Re: 1990 intermittent start problems.

Originally Posted by Jlands
Hello, can someone post a starting circuit diagram for a 1990 iroc z? Having intermittent starting problems. First thought it was vas... then heat soaked starter... but not to sure. Would like to troubleshoot and backtrack.
also, any tips on how to efficiently test is appreciated.
Thanks.
Just adding. I mean won't turnover at all.
I do hear a click under the steering column and that is all.

Thanks.
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Old May 29, 2025 | 11:53 AM
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: 1990 intermittent start problems.

Check battery health and starter health free at most parts stores. Once confirmed, verify fusable links at the starter.

for diagrams,

https://austinthirdgen.org/thirdgen-wiring-diagrams/



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Old May 29, 2025 | 03:09 PM
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Re: 1990 intermittent start problems.

Originally Posted by ShiftyCapone
Check battery health and starter health free at most parts stores. Once confirmed, verify fusable links at the starter.

for diagrams,

https://austinthirdgen.org/thirdgen-wiring-diagrams/
Thank you very much.
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