Rev counter erratic

[bazzog]

Hi, my rev counter on my 1999 2.5td has started being erratic or not working at all, having read through some posts it seems the most likely problem is a ne sensor or pulse generator, I have looked at the schematics but they don't help me a lot
Should I be able to get to it from under the drivers seat, do I have to jack it up and go from underneath, do I have to remove undertray, any pics of location or an idiots guide would be most appreciated
I'm trying to start doing things myself and am no mechanic
Thanks

[g8dhe]

Front of the engine several references to it ;
https://www.igmaynard.co.uk/bongo/forum ... 47#p330647
https://www.igmaynard.co.uk/bongo/forum ... 56#p543956
https://www.igmaynard.co.uk/bongo/forum ... 57#p543957
Not had to get to it myself as I have a V6!

[bazzog]

Unfortunately it shows photos unavailable on Simon Jones thread, like I asked do I need to go from under or over, remove tray etc
Thanks

[g8dhe]

It seems to vary depending on model;
"Re: Rev Counter sensor location
Post by 321Away » 2012 Mar 17 9:38 am

early or late shape? early is drivers side just in front of fuel pump, later shapes are front of engine behind crank pulley

Julian"

[g8dhe]

There are a couple of pictures here https://www.ebay.co.uk/itm/115761593684? but difficult to judge exact context but may help.

These YouTube videos also show the connector on the lefthand side https://www.youtube.com/watch?v=CYj2GUUTi0o

Ah ha here you go he is inserting the sensor at this point during the rebuild! https://youtu.be/t9BJfMWbRsU?t=1281

[bazzog]

Thanks makes a bit more sense now

[Bob]

Geoff is way ahead of me, but I have known a fluctuating rev counter to be a sign the alternator is on its last legs.

Not too difficult to replace from under passenger's seat.

[bazzog]

Geoff is way ahead of me, but I have known a fluctuating rev counter to be a sign the alternator is on its last legs.

Not too difficult to replace from under passenger's seat.