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JPI slimline tacho

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Hi Guys


Recently my slimline rpm gauge, after a period of being intermittent, stopped working altogether with the display just showing zeros (default) . I bought a replacement and have fitted the sensor, gauge and new wiring but still the rpm gauge is just showing zeros.


I'm at a loss to explain the problem, can anyone point me in the right direction?



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That tells me you have a problem with the sender line----or the sender itself

I assume that the power and ground line is ok since it at least reads zeros.


Eliminate the problem with the aircraft wiring by tapping directly into the sender with a separate line. If still zeros, then you may need to buy a new sender.

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  • 4 weeks later...

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