Ignition Problems - Team Camaro Tech
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post #1 of 10 (permalink) Old Mar 28th, 10, 04:51 PM Thread Starter
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Ron
 
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Unhappy Ignition Problems

I just have a starting problem with my 1968 Camaro. It was running fine then it stopped running. When I tried to re-start it it would not turn over. I thought it may have been a problem with my starter, so I pulled it and did a bench test on it and it is working properly. The starter was re-installed however the problem still exists. I then thought it must be my ignition switch so I purchased and new one and installed it, however that did not fix the problem as it will still not turn over. The car has a GM turnkKey 350/330 Engine and I run the GM HEI ignition. When I try to start the engine my Volt meter drops to "0". The battery is fully charged and in good condition. In looking at my wiring diagram the wire going from the ignition switch to the starter is coded 12PPL that is the only wire attached to the starter other than the main positive wire from the battery to the starter. The yellow wire 20Y from the coil to the starter is not used as it has a HEI ignition. THe HEI ignition has a fully 12 volt supply.
AS the starter, Battery & Ignition switch are good and it does not turn over I am at a loss as to what else I should be checking. Any ideas will be greatly appreciated.
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post #2 of 10 (permalink) Old Mar 28th, 10, 05:00 PM
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Re: Ignition Problems

Can you jump the starter with a screwdriver at the solenoid with it in park.

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post #3 of 10 (permalink) Old Mar 28th, 10, 05:16 PM
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Re: Ignition Problems

Manual tranny? Neutral safety switch?

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post #4 of 10 (permalink) Old Mar 28th, 10, 05:24 PM
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Re: Ignition Problems

Voltmeter dropping to zero indicates a bad connection.

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post #5 of 10 (permalink) Old Mar 28th, 10, 07:16 PM Thread Starter
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Re: Ignition Problems

I have not tried this yet, however it should be the same as when I had the starter out and did the bench check on it. The check will be good to check out the circuit leading to the starter, as if the starter turns over by jumping it then it should be in the circuit going to the starter.
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post #6 of 10 (permalink) Old Mar 28th, 10, 07:19 PM Thread Starter
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Re: Ignition Problems

It is aTH350 Auto transmission. I will check out the safety switch and also check if there is a voltage drop in both park and neutral, then again to see if there is a voltage drop if I try it in drive.
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post #7 of 10 (permalink) Old Mar 28th, 10, 07:21 PM Thread Starter
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Re: Ignition Problems

Don't know where the bad connection would come ?? Any ideas as to where? This is all a bit strange as all was working fine!!!!!!
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post #8 of 10 (permalink) Old Mar 29th, 10, 03:03 AM
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Re: Ignition Problems

Quote:
Originally Posted by Viking11 View Post
Don't know where the bad connection would come ?? Any ideas as to where? This is all a bit strange as all was working fine!!!!!!
A bad connection could from any one connection, or switch contacts, in the purple line.

A good test is reading the purple wire at the solenoid in START position.
A test light comes in handy if you are working by yourself.

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post #9 of 10 (permalink) Old Mar 29th, 10, 12:58 PM
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Re: Ignition Problems

A common issue on old wiring....
mount a rely on the firewall above the starter motor and use a live feed to the solenod wire.

My Spelling is not incorrect...it is creative

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post #10 of 10 (permalink) Old Mar 30th, 10, 12:16 PM Thread Starter
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Re: Ignition Problems

All is working fine now. I replaced the main wire from my fuse box to the HEI ignition and that corrected the problem. Suspect there was a short in the wire or being grounded. Thanks to all
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