Overheathing

Ok The car is 1991 Geo metro 1 liter it was overheathing when i got it now i put a new water pump,New radiator,new termostat,new uper and lover hoses and it's still overheathing can anyone give me any ideas what could be the problem ?

when you changed the radiator, did you change the radiator CAP? also, when engine gets to operating temp, is the fan kicking on as gauge moves to hot side of gauge? and as last resort, if the last two ideas check out OK, is the gauge lying? if everything checks out ok it's possible that your temp gauge is faulty. plus a thorough system flush woulnd't hurt either. hope this helps.

also possible that head gasket is starting to go but like he said see if engine fan comes on

well all that money spent becouse of the Radiator Cap see when i got the new Radiator it didnt come whit the new cap so i used the old one,So the whole coolant would come out and the car overheated got that fixed for $5.99 today new cap thank's guy for all the help