95 HONDA ACCORD TACHOMETER BOUNCES?

MY TACH BOUNCES AT ANY SPEED. SOMETIMES IT JUST SLOWLY COMES TO A REST AT ZERO. WHAT COULD BE THE ISSUE?

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  • 1 decade ago
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    you have an ignition coil that is breaking down. The ignition coil opens the primary circuit to 'fire' the spark plugs twice every engine revolution on a 4 cylinder engine. The input from the ignition coil discharges is sent to the tachometer that uses that information to calcualte how fast the engine is turning in revolutions per minute. the needle moves in response to that frequency calculation.

    when the needle on the tachometer bounces the problem is with the source of the signal and that is the ignition coil. The coil is a winding of copper wire that transforms voltage from 12 volts to about 40k volts. any break internally will cause the flow of electricity inside the coil to jump paths to the closest ground. That's whats causing your inconsistent tach reading.

    replace the ignition coil and you'll fix your tach. Don't wait too long because the tach is an early warning sign that the coil is failing and when it fails you'll be left stranded.

    hope that helps

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  • 1 decade ago

    My Tach bounced for a few months before the Distributor failed. This was a very expensive fix. Get it checked soon. If your car starts stalling, bogging, etc.; it's definitely the distributor. Make sure that you use a shop that has engine management experience.

    Or, if there is a kind God, the tach cable may just be loose. Good luck to you and good choice with the Accord.

    Source(s): 97 Accord owner.
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  • 1 decade ago

    clutch....expensive to fix....but you gotta do it

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