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what's that buzz?? 900

uid 27's pic
posted by  Art Benstein on  Sat Nov 13 12:48 CST 2004
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last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

A faulty relay could buzz.

But the usual reason for any buzzing automotive relay is a poor connection in the wiring that powers the circuit the relay is controlling. What makes it buzz is a cycle created when the poor connection provides enough power to run the coil of the relay to pull it in, but then fails when it needs to provide enough power to run the load supplied through its contacts.

I'm not sure how the 940T gets power to the FI relay and what the weak spots are in its fuse panel and feed from the battery. In a 240 with LH injection, a weak spot is a blade fuse under the hood. Perhaps a 940T has a similar problem with crimped lugs in or on the back of the fuse panel.
--
Art Benstein near Baltimore






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