any advice please
had the truck in getting new cylinder head water pump timing belts done, got truck back speedo not working now, can someone tell me what the route of the cable takes as mechanic saying he never had to go near speedo cable .
any advice on what problem could be

Have you checked to see if it's still connected??

no don't know where to start

what truck?

find it weird how it went to garage working and after doing a lot of work speedo now not , was wondering what route wiring takes

In on o/s obviously, through bulkhead then across bulkhead behind cylinder head, then down n/s to finish at g/box. Can stop working easily if disturbed or has a tight arc to it.

mitsibush l200 pickup 2006 mk4 16v

I just had my speedo sensor replaced today! The mechanic fitted it, and interestingly, after the sensor was replaced, several ABS and CAN communcation errors that couldn't be cleared were able to be cleared. I have no idea why it stopped working, but went hand-in-hand with lots of other problems (fuel tank leak causing repeated limp mode, air bag light coming on). I got the sensor from ebay for about twenty or thirty quid.

funny enough just took it for a run there .first time ive run it since i got it back and it won't drive or rev over 3000rpm aswell seems theres no power . cheers

also forgot to mention a new rail fuel sensor was fitted could this be the problem for not driving over 3000rpm

It sounds like it. When the fuel rail sensor or suction control valve is replaced both an SQL (small quantity learning) and a "supply pump correction" should be carried out. The ECU takes readings from the scv and the fuel rail sensor and uses them to adjust the fuel injection to the correct values. The sensors are extremely tight tolerance and two sensors aren't alike so they have to be recoded when you replace them as two sensors will give two different readings for the same pressure.