I believe opti is going,@ part wot car misses,will not shift properly, now oil & alt guages seem to dropdown when engine warms up ,on cruise speedo starts to jump around ,then criuse cuts out,reset cruise everthing fine ,but will cut out again,now not even @ half throttle engine misses,what a mess, Thanks for any help Gil.

 

Check the engine grounds on the frame, driver side of motor, and the rest of the grounds on the car, clean them and reinstall.