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  #1  
Old March 31st, 2011, 08:53 PM
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Baird M. Gehring
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Something Else, Tachometer Quit Working Today

Hi all, me again, today my 97 NAS D90 tachometer quit working. Checked all fuses all good. Took it out and noticed there are three tiny switches on the back are those to be messed with or do I just need to invest in a new one?
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  #2  
Old March 31st, 2011, 09:07 PM
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Kevin Buckley
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Your alternator is probably on the way out, the tach quiting is your warning.
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Old March 31st, 2011, 09:25 PM
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Baird M. Gehring
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So if I get a new alternator my tach will work again?
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  #4  
Old March 31st, 2011, 09:50 PM
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Charles Galpin
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You can take your alternator to your local auto parts store and they can test it. But yes the tach takes it's signal from the alternator.
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Old March 31st, 2011, 10:15 PM
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Baird M. Gehring
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yep, engine won't crank, guess I gotta go alternator shopping
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  #6  
Old June 12th, 2011, 05:04 AM
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Joshua
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Quote:
Originally Posted by KevinNY
Your alternator is probably on the way out, the tach quiting is your warning.
So dead on. Tach wouldn't register a reading until 2k RPMs this morning, then later in the day truck nearly died from lack of power on the way into the Lincoln Tunnel. Tom was nice enough to tow me into Hoboken with a strap on our way to dinner. He told some hot chicks it was how we saved gas when they gave us an awkward look. HAHA. Figured it was the alternator based on the symptoms before I pulled it over (lack then dramatic loss and jolt of power, etc.). Never realized the tach was tied in but figured they were related after the fact.
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