? Water cooled van overheating

[meggles]

This is the story so far:
Gauge shot up, appeared to be overheating. New thermostat fitted. Couple of wires were looking dodgy so temporarily insulated with tape (as a safegaurd). No oil in water and vice versa. Owner drove away and then(Quote)

sat happily at halfway for about 3/4 of a mile, then red
light flashed and needle shot up - seemed to come down when i whacked
the heating on full, but that could have just been a coincidence...!
no steam coming out of anywhere as far as i could tell, but really
want to get to the bottom of this!

Any advice greatly appreciated

[Aidan]

wasn't bled properly, heater needs to be on when refilling the cooling circuit, common airlock problem, check bled out should be right.

[meggles]

wasn't bled properly, heater needs to be on when refilling the cooling circuit, common airlock problem, check bled out should be right.

Hi, thanks for that. I'll try it