Technical help help please help fiat ducato 2.0 jtd 55 reg

[adamphillie]

help help please help fiat ducato 2.0 jtd 55 reg hello all im needing some help I know this subject has probably been covered many a time but no of there solutions seem to help me out.


the speedo stopped working on my van ducato 2.0 jtd 55 reg I checked clocks and wiring first then replaced speedo sensor vss it seemed to work for 5 meter down road and then went again I replaced the vss again under warranty and now nothing at all checked fuses and other wiring is there anything else left to check or have I missed something. please any help before I pull what hair I have left out many thanks adam
__________________

 

[varesecrazy]

Hi, and welcome,

Not much info when searched..,:bang:

but I'm sure somebody on here will know,

Charlie - Oxford

 

[adamphillie]

thanks Charlie


ive tried everything last resort is this weekend im putting it on a friends car ramps and getting him to spin wheels while I check sensor with multi meter, only thoughts are its a cheap sensor not genuine fiat etc

 

[toyogran]

Take a look at.......
http://www.outandaboutlive.co.uk/fo...s/Fiat-speedo-sensor-VSS-info-required/20492/
and google 'ducato speeedo not working' there's lots of info links.
Good luck!

 

[CDK]

Not much you can do with a multimeter. Speed sensor output is low level AC, square, sinus or pulses. You need a scope for this.

 

[ecunotemu]

Lots of multimeters have frequency counter and the ac range will at least tell if there's something coming out. Its possible the speedo pinion has fallen into the gearbox or is stripped its teeth.

 

[Eabbus]

I had new dials last year as a last resort to all of the above. That worked.
I had the mileage changed at a very shady looking mans house so it displayed the same mileage.
A year on and I've just had to replace the sensor again due to the seal allowing gearbox oil through which made the speedo needle randomly stop working or be erratic.
All good again now.
I dismantled the old clocks and there was evidence of a lot of static around the speedo so I assume that to of been the fault. The rev counter, fuel and water gauges were fine. I bought it with a low mileage of 19k on an 03 plate so rare use could of contributed as well I suppose.