the other day i helped a mate jump start his car using the starlet (gt ep82) so i left it running why we did it, the car must have been left for 5 minutes on idle and it started overheating and the water in the reservoir was boiling up and white smoke started coming from the exhaust, i let it cool down topped up the reservoir and radiator and the car has been running fine although the fan never ever comes on. any ideas?