bill88 Posted March 1, 2011 Share Posted March 1, 2011 2004 w/ 118k miles, recently had the timing belt replaced (water pump, radiator, spark plugs) now the tach will sit at a base line showing 800 rpm when engine is off. Once running,the rpm will consistently reflect the extra 800 rpm. This is intermittent so I can't determine any other coincidental findings (electrical load etc). Any ideas? When the tach baseline is 0 it works correctly but can revert to the error while driving. Quote Link to comment Share on other sites More sharing options...
CaptnPete Posted March 4, 2011 Share Posted March 4, 2011 I had my speedometer fail at 42K and I removed the whole instrument panel. There I learned that the speedometer and tachometer needles are driven by two tiny motors. Mine had failed and I ultimately had to have the whole panel replaced. ($700+). You might try to remove the panel and access the unit from the back. Since the motor is working, perhaps you might give the needle a little nudge and get it back into the zero position. Pete Quote Link to comment Share on other sites More sharing options...
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