strange that ? burning petrol causes heat ?
over heating ? define ? how do you know ? got a thermometer or a thermal camera , I've got an H128 £120 .
( his squeaky voice is annoying , but he is very good and fair )
causes
no coolant , don't just check the overflow bottle , look in the radiator .
water pump not working ? check that coolant moves around , by looking in the radiator , and revving the engine
fan not kicking in , check blades move freely , fuse intact ?
radiator cooling surface not blocked up externally ( internally , remove and flush with a hose )
head gasket gone ? this is a double edged sword , coolant level drops with seemingly no leak , gets hot very quickly , but gauge drops as soon as you are moving ,
thermo-switch u/s , so not turning fan on when it should ... have engine running , touch the 2 ( might be 1 ) wires together , fan should run. ( if 1 just earth it )