I’m not a car mechanic but I don’t think it’s related to the clutch since the the RPM is measured even when the clutch isn’t engaged. The crankshaft might be it since it measures the rotations per minute and the crankshaft rotates and make the pistons go up and down and if the speed at wich your crankshaft rotates is to high it will throw your pistons through your bonnet and if it’s to slow it will simply stall the engine.
So in conclusion I think it’s the crankshaft.
I think it’s the flywheel, it spins at a more stable speed than the crankshaft
Crankshaft position sensor sends info to the ECU
depends on car. Modern cars may have sensors all over the drivetrain, and they cross check before they give you a value.. Some have the position sensor on the crank and others on the flywheel. Gearboxes do have position sensors, but those are used for the gearboxes control unit.
Comments
I’m not a car mechanic but I don’t think it’s related to the clutch since the the RPM is measured even when the clutch isn’t engaged.
The crankshaft might be it since it measures the rotations per minute and the crankshaft rotates and make the pistons go up and down and if the speed at wich your crankshaft rotates is to high it will throw your pistons through your bonnet and if it’s to slow it will simply stall the engine.
So in conclusion I think it’s the crankshaft.
I think it’s the flywheel, it spins at a more stable speed than the crankshaft
Crankshaft position sensor sends info to the ECU
depends on car. Modern cars may have sensors all over the drivetrain, and they cross check before they give you a value.. Some have the position sensor on the crank and others on the flywheel. Gearboxes do have position sensors, but those are used for the gearboxes control unit.
Doesnt the tach measure the RPM though?