Posted by Keith In Washington on Tuesday, January 29, 2002 at 1:39PM :
In Reply to: 55PW Cab heater question. posted by Mike in Indiana on Tuesday, January 29, 2002 at 12:44PM :
your heater core or hoses could be plugged with sediment. I also have a valve on the top of my head where the heater hose attaches. My heater will not work unless I go out there and manually turn the valve open. I keep mine closed most of the time as I do not need the heat in the cab.
Possible things to do, if the valve is open. I would suggest removing the heater hoses and check that they are not plugged. I would also consider having the heater core flushed. If your heater is like mine all the interior controls do is turn on the fan and open and close a air deflector to force air to the defrosters.
Follow Ups: