Yet another speedo thread (yawn...)

[sheddybong!]

The speedo (and odo) on my Chim stopped working intermittently then eventually packed it in altogether. Got a new sensor fitted and thought all was OK until I noticed that it's reading WAY too high. The error seems to multiply the faster I go. Now this is OK for keeping within 30 / 40 mph speed limits, but I now have to remember to sit at 90 when passing cameras (not that I'd zoom past them otherwise you understand...). It's a real pain in the @rse having to rely on the rev counter or other drivers to know how fast I'm going. The folks at V8 tell me it's not the new sensor but the speedo head that needs replacing. Anyone had this problem and know how much it will cost to put right?

[2 Smokin Barrels]

I had this fault. (Or I should say my car did) Eventually indicated 140 mph at about 70! I bought a new speedo, & I seem to recall it was quite pricey. Presumably it's even dearer if the speedo is a non standard colour?

[M@H]

You can get them reconditioned by a company called ETB:



Cheers
Matt

[sheddybong!]

Thanks comrades, much appreciated.

[the dodger]

I think you'll find that ETB were the suppliers of the early instruments. TVR had so many problems with them they were desourced. I'm not sure when they changed but they are kept busy on repairs still! Yeh, I think repairs are expensive too.

I have the opposite problem - reading too low (dangerous!). I am going to try a sensor wheel with more teeth to see if it helps. What diff ratio is yours?

[Chimleic]

Is this another Government initiative to prevent speeding? Big Brother has infiltrated the Odo factory! LOL

[victormeldrew]

From about 95 on the instruments have been Caerbont I believe.

[sheddybong!]

Not sure what the diff ratio is, being a bit of an igoramus on techie matters I've no idea how to find out! My usual method of fixing such things is to let the expers handle it, so it's back to V8 we go......

[spend]

If you have an early car with ETB speedo, mine has a screw to calibrate in the top of speedo (think it may be covered with label or insul tape). Heard tales of 5th gear on axle stands and at 3000 rpm set screw so speedo reads 90mph - or something like that....

Dave