One of your vacuum lines has come loose or is broken. Check all the lines and repair the broken line or replace it back on the nipple that it came off of.
A blown fuse.
You may have a blown fuse.
Replace the dash cluster that's what it sounds like to me since your tachometer and speedometer both don't work
A wire going to the battery broke off, when it was reconnected the gauges and lights on the gauges start working again, however the speedometer and the tachometer did not operate.
Probably a fuse. They are all linked together.
You drive slow and change gears too soon.
you need a new onr they do this occasionally and then need to be replaced
The speedometer is not working. When the speedometer gets to 65 mph I set the cruise control.
check for an open fuse or check the vss (vehicle speed sensor)
relay
fuse to the dash gone ???
Yes, there is a fuse for this. It should be labeled INST.