I have a 1999 Toyota Camry. My heat blows hot air for a few seconds than starts blowing cooler air. If i turn it off for a minute or two than turn it back on i get hot again for a few second than cool
I had the cooling system flushed and the heater core flushed, I have replaced
the thermostat. Hot air works perfect for the first few seconds than goes to
just cool air.