'66 Tbird that wont crank over.

Asked by Nov 05, 2016 at 07:34 PM about the 1966 Ford Thunderbird

Question type: Maintenance & Repair

My son's '66 Tbird had a bad episode of run-on. When it finally stopped,
the engine wouldn't crank over.  Turn the key, there is just a clicking noise
under the hood near the alternator.  We've replaced the starter and the
starter switch and checked the battery. The engine turns freely when
turned by hand, so is not locked up.  We are stumped.  There is a weird
button under the dash,below the steering column, that was rewired to the
starter switch by a previous owner.  Not sure what that button is supposed
to do. Button looks original, but the wiring ins definitely not.

3 Answers

34,835

The button probably was installed because the ignition switch did not work. If you turn the key on and then push the button does the car start?

2 out of 2 people think this is helpful.
56,805

Try using a remote starter button tool. You can buy one at your local auto parts store. Sounds like something came disconnected while the engine was dieseling. Turn on the ignition and see if it'll start with the starter button tool. If so you're going to need to start tracing wires. I'd highly recommend getting a factory shop manual for this car. They'll be wiring diagrams in there. Try Faxon Auto Literature in Riverside, California for a reprint of the manual. They have a website. To prevent the dieseling you must use premium grade gasoline, with a lead substitute, and possibly an octane booster at every fill up. This car has a high compression engine in it. That's what I had to do with my '70 Catalina to get it to stop dieseling. HTH. -Jim

2 out of 2 people think this is helpful.
385

Runon may happen when idle is to high check with Rach 500 rpm is correct.You have voltage problem to starter check all connections & battery voltage.

1 out of 1 people think this is helpful.

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