thanks for the varied suggestions on fixing my bouncing/erratic tach. Adding a ground wire to the back of the instrument panel seems to have fixed it: steady and no bouncing.

A different problem: symptoms are loss of power at speed along with hiccuping. It's intermittant and I can't induce the symtoms. Happens slow or fast. Kicks in for awhile and then (maybe) stops and things are fine.

I've replaced fuel filter. Both fuel pumps are new enough and working fine. I'm going to clean the throttle body soon.

what else should I look at?

injectors dirty?

injector seals leaking air?

_________________?

thanks

ST