Heater Question
 

When I bought my truck the heater would divert air to the windshield when deice was selected and to the foot well when needed there, but now it will only blow air through the diverter balls and the center vent, this happened only recently, the A/C does'nt figure in the problem as all the vacum stuff and hoses had been removed before I bought the truck. I have taken all the heater control stuff out and checked all the various cables and diverting doors inside the heater boxes under the dash and everything is opening and closing fine when I slide the selector knobs on the control panel. I can't figure it out, did I hear somewere that these trucks have a heater thermostat in them that doe's something when the cab gets to a certain temp?? if so maybe it's broke.

Re: Heater Question
 

Usually the diverter box door does not move when this problem occurs. Check the door carefully as they break where they are connected to the shaft so the shaft moves but the door does not.

Jim

Re: Heater Question
 

I did look at that door and will say although it moved up and down it was weak on the hinge part that you described. I hope it's gonna be that simple a prob.

Thanks Jim.