Is the radiator fan kicking in and out? oil temp on mine reaches 110 deg when its in traffic. Is your cap blue?
have you bled the system properly
Yup, the water will start to boil and spit out of your cap. short the 2 wires together on the therm switch (as your looking down at your rad there is a sensor bottom right, screwed in to the rad) If the fan cuts in its that thats fooked
start it up yes, but when i turn mine off the fan continues to run sometimes when it been hot