84 Wagoneer no heat on"heat"

Asked by BillW1 Nov 13, 2017 at 01:38 PM about the 1984 Jeep Wagoneer Limited 4WD

Question type: Maintenance & Repair

Have heat when selector is in all positions(ac incl.)
except vent and heat when temperature selector is
at high. Why?

5 Answers
22,255

Gary answered 7 years ago

Not sure I understand. Are you referring to the temperature of the air coming out, or the location of the air coming out?

Mark helpful

BillW1 answered 7 years ago

Will blow warm air through various ducts depending on the function switch lever is on. When switched to "Heat" air blows out lower outlets but its not warm.

Mark helpful
22,255

Gary answered 7 years ago

Sounds like the blend door is not working. Check under the dash on the passenger side for any cracked vacuum hoses. While you are looking under the dash, change the heater controls to see if you see or hear any movement. It may also be the heater control valve.

Mark helpful

BillW1 answered 6 years ago

That wasn't it. All controls operate. Could it be the heater control valve? Why does the defroster blow the warmest(not hot) air?

Mark helpful

Your Answer:

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