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Wondering Tach


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I have 1996 Monsoon in my Response..The tach began to wonder..I have noticed 3000 rpm idle when the engine is turning no more than 800. Sounds like a ground to me but where do I start?

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I would assume bad connection, most likely a ground wire. Check all the connections and any attachments to the engine itself as vibrations/corrosion will most likely be the culprit.

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I have 1996 Monsoon in my Response..The tach began to wonder..I have noticed 3000 rpm idle when the engine is turning no more than 800. Sounds like a ground to me but where do I start?

It happened on my '97 Echelon too. Take the tach out and there is a rotary switch to select 4/6/8 cylinder engines. The contacts on that switch get corroded, so just rotate that switch several times, this cleans up the contacts. Make sure you put it back to 8 cylinder mode and re-install. Worked for mine, maybe work for yours too.

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