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where dose rev counter get its signal from on 2.1 td?
Posted: Tue Jan 05, 2010 10:30 pm
by weejimmy
just wondering where the rev counter gets a signal from, on the 2.1 td 406.
many people have sugested its from the injector wire but i know its not that as if you unplug it it still works.
anyone know for sure?
thanks
Re: where dose rev counter get its signal from on 2.1 td?
Posted: Tue Jan 05, 2010 11:09 pm
by steve_earwig
Surely it's the engine speed sensor via the ECU
Re: where dose rev counter get its signal from on 2.1 td?
Posted: Tue Jan 05, 2010 11:42 pm
by weejimmy
well yeah it goes from ecu, bt dose it get it from a tdc sensor etc?
Re: where dose rev counter get its signal from on 2.1 td?
Posted: Tue Jan 05, 2010 11:46 pm
by steve_earwig
What would a diesel need with a TDC sensor? Engine speed sensor, I think it's on the clutch housing.
Re: where dose rev counter get its signal from on 2.1 td?
Posted: Wed Jan 06, 2010 9:50 am
by mark21TD
Not sure where it gets it's signal from but I've swaped my pump for a Bosch and the rev counter still works, but only untill you go above 3000rpm then it stops untill you restart the engine.
The 2.1 does have a TDC sensor, it's inside the Lucas pump and is used by the ECU to set the timing (so I've been told).
Have you got a problem with your's then ?
Re: where dose rev counter get its signal from on 2.1 td?
Posted: Wed Jan 06, 2010 10:30 am
by weejimmy
yeah same as you bud
has a bosh pump and the revs cut out at 3k,
i know an early ecu will work but wonderd if theres an easyer way round it,
Re: where dose rev counter get its signal from on 2.1 td?
Posted: Wed Jan 06, 2010 4:40 pm
by nigelw
all rev counters that i have seen or looked at the electrical diagrams for take there signal from the crank sensor