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Jumpy Tachometer 900 1994

posted by  czar960 on  Thu Oct 7 00:05 CST 2004
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last visit: Thu Nov 4 10:07 CST 2010
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I have a 1994 960 Wagon with 256,000 miles. It is the B6304-S 2.9 liter in-line 6 cyl. When idling and with the car in drive the tachometer will occasionally read "0" . Sometimes at highway speeds the tach will jump from around 2500 RPM's to around 3000 RPM's. And it might do that a few times until it setles back down.

My question is what might be causing this? Could it be the crank sensor? And if it were does the tach affect the shifting of the tranny? The tranny is the AW 30/40.

Maybe a seperate topic: The tranny seems to shift well but sometimes kind of abruptly. And if I am starting out the tranny goes from first to second OK, but when shifting to third will jump back to second and back to third again. And then third to fourth (OD) seems OK.

Thanks for the help!

e r i c






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New Jumpy Tachometer [900][1994]
posted by  czar960  on Thu Oct 7 00:05 CST 2004 >


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