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1086 digital tach


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We have a 1086 with the digital tach. Just put a used sensor in and it is still showing erratic reading. For example when it is idling it shows 9xxx. What causes this? 

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2 hours ago, 1967ihtruck said:

We have a 1086 with the digital tach. Just put a used sensor in and it is still showing erratic reading. For example when it is idling it shows 9xxx. What causes this? 

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You sure the used sensor unit is good ? and adjusted to the correct air gap?

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i cured my digital tach problem after sending it off to be fixed and when it returned and still did not work .. i  rented my farm ground out and sold my 1486 to my new renter. now he has a digital tact problem. i did not realize how great life could be with very few worries and wake up every day doing what ever you feel like doing. 

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Mine was a ground problem. After tractor was split the ground was not reconnected. It would work like yours until it quit all together. I found the ground resting on the frame near the right battery. It now works like it should. 

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The old original tachs were more problems I updated mine to the later style and never had problems again

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On 5/21/2020 at 11:05 PM, 74A-472 said:

i cured my digital tach problem after sending it off to be fixed and when it returned and still did not work .. i  rented my farm ground out and sold my 1486 to my new renter. now he has a digital tact problem. i did not realize how great life could be with very few worries and wake up every day doing what ever you feel like doing. 

A little extreme over a bad tach dont you think😎

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