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How do i get heater to work

(1997 Dodge Ram 1500)
in Newark, CA on January 24, 2013
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
Displaying 2 answers & 2 comments
Popular Answer
of Portola Valley Garage on January 24, 2013
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.
of Greg's Orange Auto on January 24, 2013
ck heater control valve or vac to it,1st ck coolant level
of Portola Valley Garage on January 24, 2013
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
of Greg's Orange Auto on January 24, 2013
wow sorry didn't know the had them in that was ahead of there time in
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