QUOTE (Big Andy @ Sep 15 2009, 12:06 PM)

I don't really know what it is but when I first got this Magna 3 weeks ago, I didn't really take that much notice of the Tachometer. As a learner driver at 50 years old, I had learnt a lot since having this magna. New CV Joints installed S/H Auto transmission installed & just recently had to put another Alternator in. It now purrss beautifully but have noticed one morning that the tachometer started to work. As soon as I began to give it a little more juice, all of a sudden the needle dropped and hadn't worked since.
Oh Dear, What can the matter be? I do have a workshop manual.
I'm no expert but I would say either the tach is defective or the signal it's receiving is bad. A shop manual and a volt meter should be able to tell you if it's the signal.