how do i get heater to work on 1997 Dodge Ram 1500

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

Asked by for the 1997 Dodge Ram 1500
You may have a "Blend" door issue. Check the vacuum hose that goes into the firewall. Check blendor actuator for blown diaphram. Vacuum source comes from somewhere on the intake manifold.
2 answers 2 comments
ck heater control valve or vac to it,1st ck coolant level
Hey Greg...I looked in Alldata for a heater valve..Does not list one. I think it uses doors ot flaps, the schematic shows vacuum motors/actuators
wow sorry didn't know the had them in that was ahead of there time in