i just got my car yesterday and it was steady running in the L on the temp gauge
i see that all the Zetec's run a little hot so i went and bought some flushing stuff
well while flushing it and having the heater on (which was the first time for the heater to be on ) the dam thing goes to the little line after the l so i turn on ac and it goes down to the L
my ? is the heater stop blowing heat when it goes to the L
what could be wrong with it