ECU, Wiring, Sensors
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By heecn
#266028 Any ideal why the RPM meter go up and down(jerk) when engine idling(cold)
Atfer engine warm up the RPM meter seem to be ok.
Is the RPM meter,sensor or wiring faulty?
By zaietz1985
#267251 your engine runs exactly as the rpm meter shows??
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By heecn
#267254 The engine RPM is stable, but the RPM meter show up and down by it self.
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By RWMIII
#267302
heecn wrote:The engine RPM is stable, but the RPM meter show up and down by it self.


ah, i misread. I thought you mean the car was idling up and down.

sounds like it is the tach going out on you.