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The blower has stopped blowing any air out of the vents & defrost (no air conditioning, no heat, not even outside air). The blower motor is working. Can feel a coolness when the air is turned on with my hand up to the vent, however, nothing is blowing out.
I have the same problem 2002 overland. I can hear the motor working at all speeds, but very little air comes out the vents (all vents).
I have the same problem 2002 overland. I can hear the motor working at all speeds, but very little air comes out the vents (all vents).
AnonymousMar 14, 2014
also the blower motor makes noise no matter what speed it is on.also the blower motor makes noise no matter what speed it is on.
AnonymousMar 17, 2014
MOTOR ON BUT NOT BLOWING AIR FOR HEATMOTOR ON BUT NOT BLOWING AIR FOR HEAT
AnonymousMar 26, 2014
No air or heat coming out of vents.replaced the resistor and still nothing.any suggestions? 05 frontierNo air or heat coming out of vents.replaced the resistor and still nothing.any suggestions? 05 frontier
AnonymousMar 26, 2014
no air blowing when blower is turned onno air blowing when blower is turned on
AnonymousMar 26, 2014
the blower motor works but the air coming out of the defrost, vents or floor doesn't seem to be coming out hard enough.the blower motor works but the air coming out of the defrost, vents or floor doesn't seem to be coming out hard enough.
AnonymousMar 28, 2014
get no cold air and no hot air , but blower works greatget no cold air and no hot air , but blower works great
AnonymousMar 29, 2014
it doesnt matter where you turn the nob, it only blow on defrostit doesnt matter where you turn the nob, it only blow on defrost
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Same problem as well. 2001 Grand Cherokee Limited. The blower is working as I can hear the blower working and changing speed but air out of vents is minimal. Can change the temp of the air as normal but little to nothing blowing from vents. When moving the selector to change the vent output I can see the actuator on drivers side move the lever. Also can see the drivers side temp actuator move behind the glove box. Anyone have any thoughts. Blend doors were replaced in 06. Twice as the dealer installed them wrong the first time.
I had the same problem with mine. Started off that the heater resister was fried (burnt) as well as the wiring harnass. The resister was what caused the problem we thoguht, so changed taht, now we learned that the blower motor is surging and causing all the problems.
you'll know if its the resister and wiring if you reach under passenger door and wiggle the wiring while the heat is on high, you'll hear the motor kick on and off as the current is completed and breaks.
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Electronic Automatic Temperature Control (EATC) System
Or Electronic Manual Temperature Control (EMTC) System
Electronic Manual Temperature Control (EMTC) System
The electronic manual temperature control (EMTC) system heats or cools the vehicle depending on the EMTC control panel selection.
The EMTC control panel selections determine heating or cooling, air distribution and enables blower motor operation.
The temperature control setting determines the air temperature.
The blower motor switch varies the blower motor speed.
During A/C operation the system also reduces the relative humidity of the air.
The EMTC system operation is determined by the settings on the climate control module. The EMTC system is composed of the EMTC module, blower motor resistor, mode door actuator, air inlet door actuator and temperature blend door actuator to control the various functions.
The blower motor switch:
sets the blower motor speed.
directs the blower motor path to ground through the blower motor resistor to allow blower motor operation in LO, MED LO and MED HI.
directs the blower motor path directly to ground, bypassing the blower motor resistor, to allow blower motor operation in HI.
The A/C request button:
can command the A/C compressor ON when the function selector switch is in PANEL, FLOOR/PANEL, FLOOR/DEFROST and FLOOR when the A/C request switch is pressed. Indicator illuminates when A/C request switch is toggled ON.
is inoperative in MAX A/C, OFF and DEFROST.
indicator illuminates when the function selector switch is in MAX A/C and cannot be toggled.
indicator does not illuminate in OFF and cannot be toggled.
indicator does not illuminate in DEFROST but can be toggled ON or OFF. The A/C compressor will operate regardless of indicator status if the outside air temperature is above 6°C (43°F).
is serviced only with the EMTC module.
The function selector:
selects airflow direction.
is serviced only with the EMTC module.
The temperature selector:
selects full warm and full cool as well as blended outlet temperatures.
The air recirculation button:
selects either recirculated or outside air source.
recirculates air in any mode except DEFROST, if requested.
is disabled in MAX A/C or OFF mode where recirculated air only is used.
is disabled in DEFROST mode where outside air only is used.
is serviced only with the EMTC module.
The EMTC module also includes:
a heated mirrior button. Refer to Section 501-09 .
There are several possible reasons why your blower, vent, defrost, AC, and heater might stop blowing air:
1. Blower Motor Failure: The blower motor is responsible for blowing the air through the vents. If the blower motor fails, you will not get any airflow from the vents. 2. Blower Motor Resistor Failure: The blower motor resistor controls the speed of the blower motor. If the resistor fails, the blower motor may stop working or only work at one speed. 3. Fuse or Relay Failure: A blown fuse or faulty relay in the blower motor circuit can prevent the blower motor from working. 4. Control Module Failure: The HVAC (heating, ventilation, and air conditioning) control module is responsible for controlling the blower motor and other components. If the control module fails, it can prevent the blower motor from working. 5. Vacuum Leak: If your vehicle uses a vacuum system to control the vents, a vacuum leak can prevent the system from working properly. 6. Broken Blend Door: The blend door controls the direction of the airflow. If the blend door breaks or gets stuck, the air may not flow through the correct vents. 7. Wiring or Connector Issues: Faulty wiring or connectors in the blower motor circuit can prevent the blower motor from working.
i believe this is a vacuum operated system. if there is a problem with the vacuum supply to the control unit, it will automatically default to defrost. i would start by checking the vacuum source lines. good luck!
You did check for vacuum lines off, or wiring harnesses not plugged in all the way, or at all didn't you? Did you pay someone to do this, or do it yourself, because if you paid someone, have them look at all the connections .
I have the same problem 2002 overland. I can hear the motor working at all speeds, but very little air comes out the vents (all vents).
also the blower motor makes noise no matter what speed it is on.
MOTOR ON BUT NOT BLOWING AIR FOR HEAT
No air or heat coming out of vents.replaced the resistor and still nothing.any suggestions? 05 frontier
no air blowing when blower is turned on
the blower motor works but the air coming out of the defrost, vents or floor doesn't seem to be coming out hard enough.
get no cold air and no hot air , but blower works great
it doesnt matter where you turn the nob, it only blow on defrost
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