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Apparently "fixed' a buggy AMM... 700

posted by  Will740turbo on  Mon Jun 1 08:11 CST 2009
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last visit: Wed Oct 22 16:09 CST 2014
[RELATED]

So my AMM was acting up, throwing codes every two weeks.
Though, I've been told there's nothing to be done to fix them, I disassembled it anyway.
Under the plastic cover (held down with clear silicone sealant I think) there are two large screws, one of them with a metal connector that appears to be a ground.
I found both of these corroded - mostly the one with the ground connector.
I cleaned it off (Q-tips with the ends pulled off work) and sprayed AMM cleaner on the wire and heating blade.
Car went from 14 mpg to 20.

This isn't a guaranteed fix, and it may have been the AMM cleaner (I don't think so). The AMM is showing 2.8V, not 2.3, so it may still be bad. The battery in my voltmeter may be bad though.

Happy Bricking, Hope this helps someone.
-Will
--
1990 740 Turbo, on its way to stock specs, maybe beyond






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