Question about 1997 Jeep Cherokee
Wither defrost it will work at the lowest setting and feet works 1 through 3 but 4 is hit and miss
I would say that you have a jammed air diversion door inside the air duction, to inspect this you will need to remove the dash.
Posted on Nov 06, 2012
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Posted on Jan 02, 2017
There is a flap that directs the air. the flap is controlled by a vacuum actuator. This is located inside the venting. The actuator is connected to little vacuum hoses that attach to the temperature control switch. Either the flap is stuck, or the actuator has gone bad.
Posted on Jul 01, 2009
Look for a vacuum leak to the heater contols,most likly a hose fell off at the intake manifold area.I bet the engine is running a little fast also.
Posted on Jan 16, 2009
It's normal for the A/C compressor to come on with the defroster to dehumidify the air so the windsheild won't fog up under humid conditions. You can still control the air temp. out the vents with the temp. select switch.
Posted on Jul 19, 2009
Check under your hood for a loose or leaking vac line , The A/C system on your jeep uses manifold vac to move the air mix doors and with no vac the air mix door will move into the defrost position. Find your vac leak and that will fix your problem.
Posted on Jul 19, 2009
This is definitely 100% the Blower Motor Resistor.
Replace this and all speeds will work fine.
This Resistor is defined with 3 to 4 wires going into it, and is located adjacent to the Blower Motor.
It is easily access, removed and replaced.
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Posted on Feb 19, 2010
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