hi all having major problems with my speedo. ive got a 97 gti 6 and ive already changed the sensor on the box and still not working, ive cleaned earths etc still nowt, but before it went off all together it would work when it wanted then i realised when it went off and then reversed the slightest bit it would make it work again.. does any one know why this done that and why it wont work at all now getting naffed off with the lumpy response before 2k revs and the mrs twocking my car as this one is not going right..any info appreciated