Joeninety
New member
The tachometer on my Volvo Penta 2002 works, but drops to zero when revs fall below about 1000.
Curiously, when the alternator is not outputting (another story), or is disconnected, the Tachometer runs normally and smoothly with no cut out even when idling.
Can anyone shed any light on this anomaly? The sensor is located on the engine close to the flywheel and has two identical grey wires. The Instrument panel is the basic variety (ie warning lights for oil and temp but no gauges for these).
Thanks
Curiously, when the alternator is not outputting (another story), or is disconnected, the Tachometer runs normally and smoothly with no cut out even when idling.
Can anyone shed any light on this anomaly? The sensor is located on the engine close to the flywheel and has two identical grey wires. The Instrument panel is the basic variety (ie warning lights for oil and temp but no gauges for these).
Thanks