1999 Dodge Ram 1500 Q&A
1999 Dodge Ram 1500 Question: Heater control valve
Hardly any vehicles have heater valves anymore. Instead of controlling the heater output by shutting off the coolant into the heater core, this is now done by directing airflow through or around the heater core. The control system and flaps that direct the airflow need to be checked out if you don't have any heat. - Bret Bodas
the door that opens and closes to adjust the heat/cool is located in the black box under the dash on the pass. side the entire dash has to be removed to access it - Visitor
will not blow hot air , just warm , new radiator , new stat , have flushed heater core ,is there any outside controls , besides the air duct doors , that i can check before the dash comes out , don...
im having trouble getting hot air coming out when switch is on heat,both hoses are hot i already blew through the heater core with 90 psi air and thats clear hmm what next
a/c works,i replaced radiator,water pump,thermostat,flushed the system,and the heater core does not leak
I lost heat in my truck. I replaced radiator,thermostat,radiator cap,and water pump. Heater core is good. I have heat when I accelerate or rev engine. Once I come to a stop or truck is in idle ...
my heater blows luke warm.I replaced the thermostat with a 195 degree but still no heat.