My 2005 Accord has lukewarm heat. What is the problem?
My 2005 Honda Accord Coupe was overheating last summer. The mechanic changed the
thermostat and the water pump for me. A few weeks later the car was overheating again,
this time he changed the head gasket. I drove the car for several weeks and noticed
again that the heat was only lukewarm. I changed the heater control valve last week and
the heat was improved significantly. While driving the car for a few hours this afternoon, I
noticed the heat turned again to lukewarm to cold. What could it be?