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'01 A4 tach acting weird

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Detroitfire23:
I just bought my first Audi & my tach seems to get up in the 7k range when I'm driving normal, then it comes back to normal when I stop & sit at idle. Anyone else have this problem or know how I can fix it?

ken:
Welcome to the forum.  Sorry, but I have no idea.  I would have thought it would come from the crank position sensor, but if that was on the fritz your car wouldn't run. 

jm:
manual/auto?  which engine?

Detroitfire23:
It is a 5-speed 1.8T

jm:
does it spike up to 7k real flat and hold there solid, or does it hover around 7k?  also, does it work fine until a certain RPM and then it jumps -- or will it jump up at any random time?

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