Alt. issue

2144 Views 10 Replies 5 Participants Last post by wheels123, Aug 9, 2010

wheels123

Discussion Starter · Aug 7, 2010

Have a fox body race car w/ battery shut off. Alt wire runs along side main power cable into and out from switch. When I turn the main power switch for motor to on, the Alt. rotates (about 1/2 turn), not always but most of time. What causes this and what is cure and is it bad for Alt/ignition?
Thanks

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1 - 11 of 11 Posts

White Lightning

· #2 · Aug 7, 2010

Sounds like you need a diode in the charge wire........
Rob

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crittersf1

· #3 · Aug 7, 2010

White Lightning said:
Sounds like you need a diode in the charge wire........
Rob

That should stop the field from energizing.

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mudbogtom

· #4 · Aug 7, 2010

White Lightning said:
Sounds like you need a diode in the charge wire........
Rob

It also keeps the alternator from backfeeding the ignition, which is a problem when the car won't shut off.

What diode do you guys recommend for this?

Tom

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White Lightning

· #5 · Aug 7, 2010

Good question............................

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wheels123

Discussion Starter · #6 · Aug 8, 2010

thanks

Thanks will look in to that.

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crittersf1

· #7 · Aug 8, 2010

If you have a Radio Shack store close, someone there should be able to help you.

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res0rli9

· #8 · Aug 8, 2010 (Edited)

go to....http://www.fordfuelinjection.com/

go down close to the bottom of page and click on alternator files
and go down that page to the your alt.. and you see alt. wiring
should find it in there

or look on right side of home page for more info.

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