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Alternator LIght Blinking On and Off 200 1989

posted by  B.C. on  Mon Jun 12 09:58 CST 2006
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last visit: Wed Mar 28 22:28 CST 2012
[RELATED]

This is what I would do:

There is a wiring harness that runs under the front of the engine. It has some protection, but that is a hot grimy oily location.

There are three wires in there, a fat red that carries the heavy alternator output to the battery (via a connection at the starter), a thin black wire that connects to the oil pressure sensor, and a thin red wire connected to a spade lug on the alternator.

If that thin red wire grounds the amp light turns on. And the alternator will not begin charging.

You have intermittent flashing, so I would guess that one or more of the metal tabs that hold the harness in place has, over 17 years, abraded its way into the harness and into that thin red wire.

There are easy DIY repairs, check FAQs and archives. Many 240s have done them.

Good Luck,

Bob

:>)






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