[blackmav]

Its not something thats worried me for the last six months but my tacho on my TD42 reads about 500rpm more than what its doing. Even with the motor off but ignition on its got 500rpm on the dial.

Any thoughts

 

[GeeCee]

Take the indicator needle off the shaft and reposition it.

 

[Baron]

Its not something thats worried me for the last six months but my tacho on my TD42 reads about 500rpm more than what its doing. Even with the motor off but ignition on its got 500rpm on the dial.

Any thoughts

What year is your Patrol? On the later 4.2's if the crank angle sensor is playing up it can also cause problems with the tacho. Cheers.

 

[blackmav]

What year is your Patrol? On the later 4.2's if the crank angle sensor is playing up it can also cause problems with the tacho. Cheers.

Its a diesel.

 

[Mrowka]

That is what happened on my 1994 4.2. I scared up a new crank angle senor and all returned to normal.