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tachometer weirdness 900

posted by  Volvo_geek on  Wed Apr 21 16:51 CST 2004
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Recently I've noticed my Tach having odd behavior on idle. After the car has warmed up and I'm at a stop light idling, sometimes the needle will drop down to zero. However, the engine feels like it's idling fine, at the same pitch and vibration as usual. Very rarely, the needle will jump rapidly around in about a 1500 RPM range from the actual value. Is this an early warning of my RPM sensor going bad? Or is it in the dash? Thanks in advace guys for any comments.
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1994 Volvo 940 Estate






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New tachometer weirdness [900]
posted by  Volvo_geek  on Wed Apr 21 16:51 CST 2004 >


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