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Tach seems to be dying 700

posted by  furyconv on  Thu Jan 13 13:48 CST 2005
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My tach in my 1990 745T is acting strange. It is not responsive, and always seems to read about 500rpm higher than what the engine is doing. When I pump the accelerator, that tach just moves in slow motion. When the tranny shifts, the tach doesn't even drop rpms. When I turn off the engine, it just s-l-o-w-l-y goes back down, and doesn't go all the way to zero - it stops about 300-400.

I even unplugged the Ignition ECU, and the tach still didn't drop!

Has anybody had this problem? I looked in the FAQ and didn't see anything on Tach fixes.

Tim
1990 745T
1993 944T






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