One hose hot one. Not is the key I think.
The heat IS getting into the cabin thru the heater core and it is giving off any heat it has. But the flow is too slow. So the coolant in the heater core gives off all of its heat and the returning flow on the cooler hose is too cool.
There should be a black plastic heater control valve. Metal and plastic. In one of the two lines going to heater core.
This valve will have a small vacuum line to it.
This is the valve that turns on or off the flow of coolant from engine to heater core.
Bypass the valve. Remove it and put the hose straight to heater core to see if you then get good heat.
The part is available at about any local aftermarket parts retailer for around 20.00 or less.
Monday, November 19th, 2007 AT 1:32 AM