Tacho on a diesel

[taslucas]

Just a simple one here: Where does a tacho on a diesel get its signal from?
obvously not from the spark.
I dont know much about diesels, never owned one.

[albi]

on landies we get it from the ecu,speedo and abs
i remember VDO making a kit to run of the alt ?
or this on a defender
http://www.web-rover.co.uk/nav.php?p=td5kb/vdotacho

[albi]

http://docs.google.com/viewer?a=v&q=...ijcBDOH8HFim_A
found this for ya

[taslucas]

http://docs.google.com/viewer?a=v&q=...ijcBDOH8HFim_A
found this for ya

Cheers mate this looks like an aftermarket job?

[T0nka]

i use my ECU talk

[TuffTD42]

The engine tacho signal comes from a tacho signal driver which is mounted on the timing cover at the front of the TD42 engine just above the water pump pulley. It get its speed from the cam idler gear.

[twinotter600]

Well what if there is no ECU? The TD42 in the Y60 has a magnetic pick up either under the ip gear or on the front of the engine to drive the tach.