Speedo problem

[8Speed]

My speedo started malfunctioning by only leaping into action at 20 mph & then stopped working at all after a month or two.
I changed the sensor for a new one & now it works again but only over 30 mph.
Any ideas?

[phillpot]

https://ryanlinleyrestoration.co.uk/

[sixor8]

Not come across Ryan Linley before. Interesting that they are in the same corner of the UK as Caerbont, and Speedy Cables who are almost opposite, who will both not repair the analogue ones any more.

I hope they do, because there's work for them I expect.

[Harvy500]

Adjust the sensor to be about .3mm away from the toothed ring. May not fix it but worth a shot before investing in a new Speedo. Perhaps it's just a dodgy sensor. I had the same issue when I bought my car and a new sensor fixed it.
Paid £40 delivered for mine just a few months ago.
The guy who sold it to me sells them still. Should be able to track him down in the parts classifieds on here.
The sensor I got is more sensitive than the original.

[8Speed]

Harvy500 said:

Adjust the sensor to be about .3mm away from the toothed ring. May not fix it but worth a shot before investing in a new Speedo. Perhaps it's just a dodgy sensor. I had the same issue when I bought my car and a new sensor fixed it.
Paid £40 delivered for mine just a few months ago.
The guy who sold it to me sells them still. Should be able to track him down in the parts classifieds on here.
The sensor I got is more sensitive than the original.

Thanks Harvy.
I paid a lot more than that for my new sensor! Do you have the details of where you got yours from?
I'm sure my new one has the right gap to the toothed ring & so it may be the speedo itself although I think there's a module behind the dash which could be the culprit - any more ides anyone?

[8Speed]

I think my sensor gap is set at 1.5 mm - is this correct?

[x 7usc]

If you have the silver rimmed dials (Caerbont) then 1.5mm gap is way to large, Harvy is correct with 0.3mm, if you have the black rimmed gauges (ETB) then 1.5mm is ok as thats usually 1-2mm

[8Speed]

x 7usc said:

If you have the silver rimmed dials (Caerbont) then 1.5mm gap is way to large, Harvy is correct with 0.3mm, if you have the black rimmed gauges (ETB) then 1.5mm is ok as thats usually 1-2mm

Thanks, that's a great help.
I've got the silver rimmed dials so I'll try narrowing the gap.

[hillclimbmanic]

sixor8 said:

Not come across Ryan Linley before. Interesting that they are in the same corner of the UK as Caerbont, and Speedy Cables who are almost opposite, who will both not repair the analogue ones any more.

I hope they do, because there's work for them I expect.

Ryan was the Technical director for Speedy Cables! He is a very clever man! He is MUCH faster, cheaper and easier to deal with than Speedo Cables...
He is fixing my Early Pre-Cat Griff S&W analogue speedo, as we speak!

Manic

Edited by hillclimbmanic on Saturday 30th March 12:00

[ukkid35]

8Speed said:

Thanks Harvy.
I paid a lot more than that for my new sensor! Do you have the details of where you got yours from?
I'm sure my new one has the right gap to the toothed ring & so it may be the speedo itself although I think there's a module behind the dash which could be the culprit - any more ides anyone?

I have an advert for a replacement sensor here, I should warn you that I am running low on stock though, and waiting for more to be delivered

https://www.pistonheads.com/gassing/topic.asp?h=0&...

Edited by ukkid35 on Friday 5th April 12:37

[nickfrog]

The title was far more promising that the actual content of the thread. Disappointed.

[macdeb]

My first Griffith 500 (M600TVR) used to add 1 mile every time the ignition was turned on and again when turned off. So it used to gain 2 miles just backing it in and out of the garage.