HI
I have a 2000 Citroen Relay 2.5d. The Tacho is not working.
Does anyone know where the pickup is?
I have located the cable speedo drive on gearbox, but there are no wires going to it.
The van has an ECU be it a basic one with no obd port
Thanks
Jon
2000 Relay 2.5d Tacho
Moderator: RichardW
Re: 2000 Relay 2.5d Tacho
The pickup for the rev counter should be on the top of the gearbox pointing down onto the flywheel.
Re: 2000 Relay 2.5d Tacho
Thanks Wheeler. Found it. It's actually on the bottom of the gearbox on mine. Looked for new one and found it listed as crank sensor. I removed and cleaned it and it's working at the moment, if only from 1k revs, but had nothing before. Have to order new one at some point
- white exec
- Moderating Team
- Posts: 7445
- Joined: 21 Dec 2015, 12:46
- Location: Sayalonga, Malaga, Spain
- My Cars: 1996 XM 2.5TD Exclusive hatch RHD
1992 BX19D Millesime hatch LHD
previously 1989 BX19RD, 1998 ZX 1.9D auto, 2001 Xantia 1.8i auto
and lots of Rovers before that: 1935 Ten, 1947 Sixteen, 1960 P5 3-litre, 1966 P6 2000, 1972 P6 2000TC, and 1975 P6B 3500S - x 1752
Re: 2000 Relay 2.5d Tacho
That's odd. The sensor on the gearbox is usually for the speedometer, and is referred to as a distance sensor.
The tachometer sensor is shown on Parts as being at the top of the gearbox bellhousing, pointing vertically downward.
Citroen don't help by Parts referring to speedometers as "tachometers", on the English pages anyway.
Strange that your rev counter is now working again. These things can go intermittent, as they generate a really tiny electrical signal. The distance of the sensor tip to the flywheel periphery is also critical (should be 1mm). New ones often have a small 1mm plastic tip, which is installed touching the flywheel, but gets harmlessly worn off on starting up, leaving the correct 1mm gap. With a used one, or one without the spigot, you need to push it in all the way to touch the flywheel, and then withdraw it by 1mm.
The tachometer sensor is shown on Parts as being at the top of the gearbox bellhousing, pointing vertically downward.
Citroen don't help by Parts referring to speedometers as "tachometers", on the English pages anyway.
Strange that your rev counter is now working again. These things can go intermittent, as they generate a really tiny electrical signal. The distance of the sensor tip to the flywheel periphery is also critical (should be 1mm). New ones often have a small 1mm plastic tip, which is installed touching the flywheel, but gets harmlessly worn off on starting up, leaving the correct 1mm gap. With a used one, or one without the spigot, you need to push it in all the way to touch the flywheel, and then withdraw it by 1mm.
Chris