Xantia TD Instrument sensors?

lhm_leak · Unread post by **lhm_leak** » 09 Jan 2004, 22:04

Seeing as I'm going to be getting my hands dirty this weekend I might as well see if I can make my speedo and tacho work properly again too. So, I have a couple of questions about these.
The Speedometer - does anyone know if the drive is electrical or mechanical on these cars ('95/M TD LX )? I suspect it's electrical due to the behaviour of the needle under fault conditions, but would like confirmation. If that IS the case, where is the sensor? I've had a cursory look, but can see very little in the gearbox area!
The Tachometer - I know that this is definitely an electrical feed. Again, I need to know where to find the sensor!
Thanks,
Stu.

allmond · Unread post by **allmond** » 10 Jan 2004, 00:46

If you drive in reverse, and your speedo registers a positive speed then you have an electronic speedo - they just count impulses, they don't know which way you're driving! A mechanical one tends to try to go through the needle stop to register a negative speed.
Jamie

vanny · Unread post by **vanny** » 10 Jan 2004, 01:54

The tacho sensor is found in a position above the fly wheel, towards the back of the gearbox/engine join. Its higher than the speedo senor and you should be able to get at it pretty easy.