Rusty Axle
New member
The tach on my 2019 Volvo Penta 4.3 V6 jumps intermittently when underway, typically 1 - 2000 rpm above actual, then immediately settles to proper rpm for a period.
A scan reveals an analog gauge sensor low voltage or interruption in voltage. Since all other gauges function properly I attribute the fault code to the tach issue.
The ECM causes an audible alarm every minute which is quite annoying for such an unessential fault.
I have checked and tightened all connections on back of the tach, which appears as new with no corrosion whatsoever.
I am not familiar with the Volvo 4.3, and there is no wiring diagram in the service manual. Can someone please point me to where the source of the tach signal is on this motor, wire colors etc? Thank you in advance.
A scan reveals an analog gauge sensor low voltage or interruption in voltage. Since all other gauges function properly I attribute the fault code to the tach issue.
The ECM causes an audible alarm every minute which is quite annoying for such an unessential fault.
I have checked and tightened all connections on back of the tach, which appears as new with no corrosion whatsoever.
I am not familiar with the Volvo 4.3, and there is no wiring diagram in the service manual. Can someone please point me to where the source of the tach signal is on this motor, wire colors etc? Thank you in advance.