V8S speedo erattic

[dtho]

The speedo on my V8S only works for about ten minutes from start up and then stops working altogether. Could it be earthing or does it sound like the transducer in the clocks itself playing up.

Any ideas ?????

[S3Paulo]

My S3 speedo likewise has become erratic. The tick-over has gone awry because of it. It's booked in for a service and tune-up tomorrow..hopefully the specialists will fix it...I'll keep you posted.

[HarryW]

Had a similar issue than immproved greatly when I clean up the connector to the transducer, which was oil soaked. Accessed it from above rather than droppng the exhaust myself.
It now works 99.9% of the time, the other 0.01% it reminds me its a TVR .

harry

editted to add i know 99.9 + 0.01 % doesn't add up, but left it in for entertainment value .

>> Edited by HarryW on Monday 9th May 22:30

[z_chromozone]

Mine plays up too, especially when hot.

Z

[S3Paulo]

Took my S3 to Horizon Motor Sport who advertise in the Sprint. The technician investigated my erratic speedo and concluded that, Speedo head has an internal fault requiring removing and sending for specialist repair. The gaffer said the specialist is somewhere in Wales but was unable to say where. Does anybody know where to get a speedo head fixed...I am given to understand they are no longer manufactured.
They also told me that the faulty speedo does not effect the tick-over...they hooked it up to the diagnostics and have done something, cos' it seems to run a lot better...although I don't know how fast I'm going....Paul.

[gw1]

Sent my speedo to Speedy Cables (Wales) but came back with a note saying it was fine (and a bill for £20. Found the problem to be the connector 6" from the sensor. As it is under the car it's prone to corrosion.

[dtho]

Many thanks for all the responses. I have purchased the bible and am gongto have a go at cleaning up the sensors etc one weekend. It goes in for service and MOT next week so once back I will tinker. You never know may get lucky.