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1640 combine rpm sensor issues

27 views 2 replies 2 participants last post by  Mountain Heritage  
#1 ·
I have changed out the sensor as the old one was not reading out on the digital readout. Now it will only read 2450rpm no matter how much engine is reved up.
Once I start the mill up, the rpm read out disappears.
Why the 2450rpm reading when only idling?
Do not think it is a short? Is there another sensor or module that is causing the error?
Is there a piece missing off the pulley for the sensor to read off of?
Wondering what i am missing?
 

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