1995 Beaver Where does the tach get its signal from.
The tachometer.on my motor home is erratic at times. Alternator is working correctly. Cummins 6cta 8.3 mechanical. Thanks, Pogoil.
Forum Discussion
Most Class 8 trucks pick tach signal from flywheel teeth (around 112 depending on engine). Erratic tach reading could be caused by poor connections in wiring OR pick-up sensor too far from flywheel teeth. If I remember correctly the proper adjustment is back-off 3/4 turn from contact with flywheel.
