Tachometer

1991 CHEVROLET CAMARO

MIKE KNOPP

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Hi there my Tach reads about 5000 rpm at idle, I have checked the wiring as per the factory manual.

All the circuits checkout okay ,I have replaced the Tach as recommended by the manual but the new one does the same thing ,where do I look next?

Feb 13, 2007 at 12:53 PM

ERVMISTER

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exchang out your curcuit board as this is usually the problem, i had the same problem and it cured it

Feb 14, 2007 at 8:24 PM

GMPERF

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I had the same problem with the tach on my 92 Camaro. Tried the resistor fix but it didnt work. Finally found a tach board at the junkyard that worked for about a year.
I found a new replacement tach board. Only had it for about a week but it seemed to fix the problem! Hurray!!

http://www.wc-autoparts.com/new-1990-92-chevy-camaro-v8-tachometer-circuit-board/

Image (Click to enlarge)

Jul 11, 2017 at 12:48 PM

STRAILER

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53,855 POSTS

Great addition to this thread! Please feel free to help out whenever you are on the site :)

Cheers, Ken

Jul 11, 2017 at 4:40 PM

91BLKCAMARO

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I have a 91 camaro V8 RS convertible...the tach maxes out & stays there when the car is running...any ideas on the fix?

Jul 11, 2017 at 4:41 PM (Merged)

SERVICE WRITER

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Sounds like a ground problem with the gauge.

Jul 11, 2017 at 4:41 PM (Merged)

91BLKCAMARO

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[quote:cfe86ec046="Service Writer"]Sounds like a ground problem with the gauge.[/quote:cfe86ec046]

isn't the whole instrument cluster grounded as a unit....if not any ideas on where the tach is grounded

Jul 11, 2017 at 4:41 PM (Merged)

SERVICE WRITER

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the gauges are not all grounded together. Here is the location of the ground on the connector for the tach.

Jul 11, 2017 at 4:41 PM (Merged)