Big block electrical issue
Thread Starter
Instructor
Joined: Jun 2018
Posts: 135
Likes: 5
From: Indiana
Big block electrical issue
67 with TIC ignition. Sometimes motor fires up and dies when letting off the key. Hooked timing light up and light stops when let off. At times it’s ok and runs. Where’s to start looking?
Burning Brakes
Joined: Jun 2015
Posts: 839
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From: Maumelle Arkansas
Check the wires on your ignition switch or the switch itself. Take it out of the dash but leave wires hooked up. Try to start the car and jiggle the connections. See if you can find a loose connection.
Thread Starter
Instructor
Joined: Jun 2018
Posts: 135
Likes: 5
From: Indiana
Thread Starter
Instructor
Joined: Jun 2018
Posts: 135
Likes: 5
From: Indiana
thanks
Le Mans Master
Joined: Feb 2012
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From: Western Massachusetts
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(There are two ballast wires in this system and not my first suspect, always check a connector/terminal first).
Dan
Last edited by dplotkin; Mar 1, 2021 at 05:11 PM.
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Thread Starter
Instructor
Joined: Jun 2018
Posts: 135
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From: Indiana
If you have K66 transistor ignition from Mother General please inspect the connector at the TI AMP. Pull it off by its boot, look, and re-seat. This has fixed a few with your symptoms including my own. Let us know.
(There are two ballast wires in this system and not my first suspect, always check a connector/terminal first).
Dan
(There are two ballast wires in this system and not my first suspect, always check a connector/terminal first).
Dan
thanks
Le Mans Master
Joined: Feb 2012
Posts: 5,371
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From: Western Massachusetts
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Same ignition switch as a non TI car. Same test procedure. First verify all connections at TI amp, coil & ignition switch. Get out your wiring diagram and your V-ohm meter and verify 12 V on the ignition terminal of the switch when in ON position. You could have a bad switch - but I suspect the TI amp connector first with that symptom.
Dan
Dan
Last edited by dplotkin; Mar 5, 2021 at 02:42 PM.
Thread Starter
Instructor
Joined: Jun 2018
Posts: 135
Likes: 5
From: Indiana
T connector white wire at firewall needs some work. Grabbed it and got power to TI unit. Need new one.
thanks
thanks
Same ignition switch as a non TI car. Same test procedure. First verify all connections at TI amp, coil & ignition switch. Get out your wiring diagram and your V-ohm meter and verify 12 V on the ignition terminal of the switch when in ON position. You could have a bad switch - but I suspect the TI amp connector first with that symptom.
Dan
Dan
Le Mans Master
Joined: Feb 2012
Posts: 5,371
Likes: 2,878
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist