No.
Yes it could
no
sometime the fan do not work which can cause the car to overheat. Also it can be a fuse for the fan. Check your thermostat.
my air is cold, and car does not overheat but the fan does not work
yes
No
no it can not.
YesYes
A leaking heater core will cause the engine to overheat because the coolant is leaking out.
If oil pressure is low it certainly can cause the car to overheat. This is because the mechanisms are not being properly lubricated with enough oil.
Not quite sure of everything, but driving it in the heat for a long period of time could cause it to overheat.
Yes, low coolant will cause it to overheat without the AC; that is not the only reason that will cause overheating however.