My 1995 ranger rev's high on start up and takes a few seconds to slow down

you are stopping the vac process and inter rups vac it does shut down if you remove any vac line

Check map sensor or throttle control sensor

Define idles high like its going high rpms before shifting or the engine itself is high reving if its high rpming when shifting its mostly you tranny going out you can try tranny fix oil I used it on my truck when it had shifting problems and ive had no problems since it takes a few days to work though and if its the motor itself it could be a lot of things but I dont know much of the problem based on what you told us

did you changer the oil, filter check all electric connect .

Check TPS sensor and IAC sensor.

I also have the same problem has to be start in first gear and then no power for ages till the turbo warm up. Had you any luck with getting your problem fixed??

sounds like you are having problems with the throttle valve cable trying to stick. check to see with the engine turned off to see by pressing down on acclerator pedal to the floor and releasing it quickly. if it shows to be slow in returning then you need to replace cable on throttle body. hope this will help you!!!

this sounds like it is not getting enough fuel to engine. change fuel filter, and check to make sure air filter is clean. also check the fuel pressure regulator if need be.

possibly cracked or dry-rotted vacuum lines are being moved in just the right spot to allow it to run for a period of time until it becomes jarred again visually look for unattached vacuum lines and dry-rotted lines

With out a check engine code there could be few things that can do this, clean the mass air flow sensor, check your engine air cleaner and then if this doesn't help, have someone start the car while you watch the throttle linkages, after it warms up watch which linkage moves when the engine speed drops this will be connected to the problem sensor / auto choke. Try unplugging it to see if it helps before you go out and buy a new one.
I hope this helps
Sam