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#2
09-19-2000, 06:42 PM
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Is this with the key on or off. If with key off, the movement in the tach is kaput. With key on, same possibility, but.. may also be a loss of ground..
------------------ Jeff Lawrence 1989 300e 2000 Dodge Grand Caravan SE 
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#3
09-19-2000, 08:05 PM
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Sorry Jeffsr,
I stated that wrong. The tach works fine, what I meant to say is,"with the rough idle, the tach doesn't vary, it reads as if there's no rough idle". Just as if the car is running smoothly, if I stepped on the gas the tach reads normal.
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#4
09-19-2000, 09:25 PM
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The tach movement is damped so that the tach will give a reasonably average reading. I assume you mean 750 RPM not 7500. You would have to have a really grossly rough idle to get it to bounce the tach very much..
------------------ Jeff Lawrence 1989 300e 2000 Dodge Grand Caravan SE
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