440 ('96) Auto speedo sensor
 

I'm sure it isn't just me, but does anyone know where I could get a (working) speedo sensor for a '96 2.0 auto GLT. New, aftermarket, used, made-up from bits!! This is the only thing wrong with the car and it is really annoying. other than getting the old one out, which is only slightly less annoying. Any tips anyone?

Are you sure it's the sensor? This is quite a common 480 problem - assuming the 440 set up is the same there is a plug connector in the wiring from the sensor to the instrument panel. Often the problem is there - cutting the wires (it's a shielded cable) and soldering the connections together instead can work wonders.

I am assuming your GLT has the info centre? Is the actual problem you are getting the speedo stopping working periodically, and no speed related info on the info centre? If so, then also check the connector plugs at the back of the instrument panel are fully home; another common culprit is dry solder joints on the instrument panel PCB.

Trying to remove the sensor itself often breaks it - beware! I do not know where you'd find another one other than a 400 being broken...

David

Hi David,

Have had all of the dash out and resoldered everything, tested continuity of cables to the sensor connection below the airbox, then paired back the cores of the cable and check for any resistance measurable on the lines to the sensor. completely open circuit. So...I assume that the sensor is broken or a cable core has broken. I think that my next step is to cut the cable close to the sensor and check again as it looks almost impossible top get the sensor out without taking either the exhaust downpipe and starter off.
Carr off road until spring so will get to it sometime. Many thanks for your reply, Ian.

Hmmm...it does sound as if it is either the sensor itself or a break in the wiring very close to it, as you say. Keep us posted how you get on with the next stage you plan!

David

Fixed!!!
 

Greetings one and all!, many thanks for the comments and help on the forum and I'm happy to report that following a short road test the speedo now works. Can't say this was easy, but I bought, in the end A Lemark LCS475 sensor. Now this doesn't fit, but it contains the correct coil so with a bit of modification and careful fettling it will go into the hole on the ZF box. Made up the cable loom and plugged it into the socket under the airbox and it works. Have found that the gearbox has some form of LS Diff as it doesn't like turning the wheels smoothly when up on stands & this is probably very stupid and dangerous, so don't try this at home kids!
Anyway we seem to be up and operational, will be out when it finally stops raining.
Cheers!