This morning i noticed that my speedo was not working. The needle doesn't rise, unless i press the brake pedal - then it rises to the current speed but then drops to 0 again. What can cause this, and i hope it's any easy (at home) fix?

sounds like a bad sensor or wire is it manual or auto

Manual. Where are the sensors/wires - is it something i can look at or best to take it to the garage?

not sure mate i am not fimilar with the newer trucks mine has a old fashion cable into the gearbox

If anyone knows where the sensor is located, i've bought a new one off ebay for just over £20 and would like to try fitting it, but need to know where to look! Pictures for a simpleton like me would be great

Hey @PorkPie . Maybe this will help - it's for the KB4T - not sure if that's what your's is, cos I'm old school too (don't think we have a cable though cheffie - do we?) You can use the site to track down your exact model if it's different from the link.

https://www.megazip.net/zapchasti-dlya-a...-t-case-1896028

yeh the classics are cable driven a inner turns inside a outer,

so is there a separate sensor in the box for the ECU to pick up the vehicle speed or is that run off the cable as well - sorry Porkpie - slight hijack going on here.

on your truck?

aye - well fbw ones - thought yours was the same

it is the same mate, yes cable operated no sensors cable from box to clocks mate

was just was wondering how the ECU got the vehicle speed is all - I believe you on the cables to the clocks bit ;)

counter in the fuel pump i do believe

For the revs that mate - confused now...

ha ha thought CSS for revs

the only other place would be clocks but the clocks from pfbw are the same so it has to be pump

nah cos it would only be right in 4th gear then (1:1 ratio engine to gearbox)

My Speedo did exactly th3 same as this .
Had it booked in to have it looked at as couldn't figure it out .
In the mean time I took it to a jet wash to give it a clean and sprayed all the hubs at the same time to clean all the abs sensors etc , and hey Presto it was working again . 2 years later and still going strong .
Try jet washing the inside of your hubs and discs etc

Quote: Heathen wrote in post #17

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nah cos it would only be right in 4th gear then (1:1 ratio engine to gearbox)

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Quote: animal wrote in post #18

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My Speedo did exactly th3 same as this .
Had it booked in to have it looked at as couldn't figure it out .
In the mean time I took it to a jet wash to give it a clean and sprayed all the hubs at the same time to clean all the abs sensors etc , and hey Presto it was working again . 2 years later and still going strong .
Try jet washing the inside of your hubs and discs etc

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Quote: 123hotchef wrote in post #19

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Quote: Heathen wrote in post #17

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nah cos it would only be right in 4th gear then (1:1 ratio engine to gearbox)

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does the ecu have a spedo count?

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pump must know or how would it know how much fuel to deliver

it is a strange one! my truck has no abs either! so no sensors there

Do the wires from the speedometer go behind the stereo cavity? As the only thing i may have done is dislodged a wire whilst trying to jam the new stereo in the back of the cavity.