Tachometer Jumping randomly while driving

Sounds like a bad ground or a short somewhere. I've had it happen before on aftermarket tachs. If it's stock I'm not sure where the ground fror it is, but it shouldn't be too hard to track down if you can get some good diagrams. Just wait for JRichker to post up some fabulous diagram that will help you solve your problems and you'll be set.

Are there any mods to your ignition system?

I have a simalar problem, the tack gets stuck and the mph bounces all over, I thought it would be the whole gauge cluster

Nibbie said:

I have a simalar problem, the tack gets stuck and the mph bounces all over, I thought it would be the whole gauge cluster

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Sweet...I'm not the only one.

Would love to know how to fix this. I have pulled the cluster out, clean all contacts, cleaned all gounds in engine bay. Next step is to put my fist through it!

Matt