For quite some time now, when excellerating up to a high rpm the tach on my gauge jumps up and down. It doesn't stay at a constant rpm. Whats weird about it though is that it doesn't happen all the time. Only every once and a while. Feedback please.

 

It means your car is in self-destruct mode.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16er &raquo;</TD></TR><TR><TD CLASS="quote">It means your car is in self-destruct mode. </TD></TR></TABLE> True story, saw a ricer take out three city blocks that way.

In all reality it means your tachometer signal is breaking up due to some odd electrical interference. Make sure your all your connections between the distributor and the cluster are nice and tight.

 

My guess is that's your dist. wire, or your ground is way off. But I'd double check your green wire (if its aftermarket) aka your distributor wire it may be not right.

and its ACCELERATING

 

Your dizzy is about to give you a hissy.

In all seriousiness, your distirbutor is going bad.

 

The stock tach needle is jumping but everything else seems fine?

This problem is typically caused by a failing distributor igniter. Replace the igniter. OEM is about $105; a good aftermarket one is betwteen $40-50.

 

Thanks guys. I will check it and see if thats the problem. Reply to my other topics as well.