Gotta 95 Ford ranger 2.3 Liter, I recently installed a clutch. Now having other issues.

#1 Truck gauge for temperature use to always stay on cold. Now it move fluctuations depend on #2.

#2 Radator reservoir top pops and Antifreeze going somewhere have to add antifreeze about everytime the temperature reads halfway or better.

#3 I changed the the thermostat today, think was bad because symptoms above. Problems still accurring

Someone please Help!!!!