Tachometer dancing - Mustang Evolution

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Old 11-10-2012, 08:00 PM   #1
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Tachometer dancing

So I took the her out for a drive, after rerouting the throttle cable to see if that helped with the dead-spotting and no luck really, but not the tachometer is dancing a little bit usually only 50-200rpm I don't feel surging or a difference in speed either while idling or driving. Also the car was idling at 1k RPM before pulling out when I finished my five minute drive (not including a letting the car warm up in park) of driving mostly light throttle 20-40mph maybe mashing the throttle once or twice it was idling at 1.5k
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Old 11-11-2012, 12:51 AM   #2
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Quote:
Originally Posted by Billymich View Post
So I took the her out for a drive, after rerouting the throttle cable to see if that helped with the dead-spotting and no luck really, but not the tachometer is dancing a little bit usually only 50-200rpm I don't feel surging or a difference in speed either while idling or driving. Also the car was idling at 1k RPM before pulling out when I finished my five minute drive (not including a letting the car warm up in park) of driving mostly light throttle 20-40mph maybe mashing the throttle once or twice it was idling at 1.5k
That could be indicative of a slight engine miss, erratic tach signal or a failing tachometer.


A dead spot when you step on it can be an ignition timing or fuel delivery problem.
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