Where/what is a VR Sensor?

[massive]

Can someone tell me where and what a VR sensor is on an M20 2.5?

[liam012]

i asked someone this question recently
if yuo imagine the trigger wheel on your engine has loads of teeth all the way around, one of the teeth is missing , the vr sensor works by using an internal magnet and is placed an inch from the trriggerwheel - the magnet detects when the part of the trigger wheel passes by with no tooth as ther is less of a magnetic current. i think this tells your car crank position or tdc i am not sure
someone with more brains will elaboratre but you get the idea

[Ant]

10/10 for Liam !

its basically the sensor that tells the ECU what rpm , and where in rotation the crankshaft is.

It puts out an A/C waveform for the ECU to decode the relevant info from, this is the complicated bit.

the sensor is mounted on the drivers side of the block at approx 8 O'clock position. to retrofit you'll need to remove the VR itslef ( 5mm allen bolt x1 ) and then remove the stand from the frot of the block, 2 x 13mm M8 iirc ?

you'll need the 60 tooth wheel and front pulleys too massive. should answer your PM

[massive]

Great, thanks both

[Dan318-is]

hows it going kelly?

[massive]

Its in being done now, hopefully back on the road by the weekend

My mechanic hadn't heard of a VR sensor so thought I'd speak to the experts

I'll pm you when its all done, and send you a photo of it in its new home

[Brianmoooore]

My mechanic hadn't heard of a VR sensor so thought I'd speak to the experts

I've never heard of a VR sensor either. What does VR stand for?
If it is the crank position sensor, then BMW refer to it as a pulse generator.