i have recently bought a bongo with the intention of driving to Bulgaria in it in a few weeks, so i took it to my local garage for a service and explained that the heater didnt work and would he have a look at it.
when i collected it he said the thermostat wasnt conected and he had now conected it.
i drove about 4 mile and it overheated, i took it back and he said, "i guess it was disconected for a reason." after bleeding the system and trying again unsuccesfully he has come to the conclusion that the radiator could be blocked with gunk because its cold at the bottom and hot at the top (having searched for info already this appears to be the norm) the car will idle with the gauge at 11 oclock but as soon as i go anywhere the temp rises.
the car was running perfectly well before the thermostat was conected
so it is now disconected again, but obviously needs to be addressed as i will need a heater.
have any of you come across this, or have any suggestions that i can pass on to my mechanic. as i am not mechanically minded. (clueless actually)

thanks in advance