koda55 wrote:
Yes, the temp in the drivers and passenger seat is not warm. Back flushed the heater core and it did not help. The heater valve is working properly. It opens and closes like it should. My temp on my scan gauge is 177. It goes up to 179 at times on flat land and not higher. When pulling a mountain I get lots of heat out of the heater. That is why I was wondering if it would be possible to put a higher thermostat in.
It's a long run from the engine to the front seats. It's also a big area of coach behind you that the heat dissipates into. I would do as has been suggested and run the coach furnace.