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john deere tachometer

chris5280

Dec 6, 2021
1
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Dec 6, 2021
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have a jd 2155 that the tach dose not work all other gauges work on it and have power to plug works with multimeter on plug new tach
 

Bluejets

Oct 5, 2014
7,050
Joined
Oct 5, 2014
Messages
7,050
have a jd 2155 that the tach dose not work all other gauges work on it and have power to plug works with multimeter on plug new tach
Apparently they have a gear tooth sensor on the front of the timing cover with a one wire pickup.
So I imagine the sensor to be a high resistance coil to ground.
 
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