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problem with tach on a '79

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Old Apr 19, 2004 | 04:36 PM
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From: wilton ct.
Default problem with tach on a '79

my tach quit this wknd. when i started the engine it was working fine.about 3 hrs. later,it pegged the next time i started it ,and now the needle doesnt' move.what do i do now? could a wire be loose?, if i have to remove the tach,how hard is the job? thx, jim
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Old Apr 19, 2004 | 08:45 PM
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Default Re: problem with tach on a '79 (corv58)

More than likely you need a new printed circuit.
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Old Apr 19, 2004 | 10:05 PM
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Default Re: problem with tach on a '79 (killain)

Drop the column down enough to get the tach/speedo cluster out. Check the back circuit board for open or cut wires. I had to jumper a couple leads together to get the bulbs to work on mine. Easy work, just be careful not o bend anything beyond it's limit when removing or installing the cluster. There's also the tach filter under the hood near the distributor, not sure how to check that tho.
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Old Apr 20, 2004 | 04:09 PM
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Default Re: problem with tach on a '79 (BacaBill)

thanks for the info. i think i will start at the distributor first,and go from there. i have a friend with a '79 and will ask him this wknd if he ever had a similar problem. i will post the result. thx,jim
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