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blend door

Hello, thank you for writing in. The vehicle is likely having more than one issue at once. The blend doors control the flow of air through the vents and the cabin. If they are unresponsive, you may have one of...

You will need to have the blend door actuator removed and the blend door rotated manually to see if it can change the temperature on the drivers side. If it cannot then the blend door is broken inside the heater...

If the air conditioning system is on and vent temperatures are as expected for a/c at certain outlets (typically outlets would measure around 35-40 degrees below outdoor ambient) yet the air blowing from other outlets is "warmer" or indeed "hot",...

The control actuator that moves the door to control this may have a wiring connector issue due to connections at control head and actuator wiring was miss routed and it pulls the harness connector wires too taught. You should disconnect...

Hi there. There is a blend door issue on your ducting to your heating and air conditioning system. Check all of the blend doors and make sure that they are working. The blend door that is not working properly can...

Hi there. Check the blend doors to the air conditioning and heating system. If the outside blend door actuator is not working properly or if it's open to the outside air, it will draw air from inside the engine compartment....

When the oil pressure drops lower than 8 psi, then the oil light will come on. If the oil pressure drops and there is no light, then check the oil pressure sensor (https://www.yourmechanic.com/services/oil-pressure-sensor-replacement) harness for power. If there is power,...

Hello, thanks for writing in. In order to give you a proper information you will need to supply the vehicle year, make, and model to us. Otherwise we cannot give you a procedure or quote. Feel free to resubmit another...

The a/c door actuators do not need programming. I think what happened is the door was in the incorrect position when you put in the actuator. What you need to do is remove the actuator and leave the actuator electrical...

Hello. It is possible that your blend door actuator has failed. This is the part that controls your blend door. The blend door is responsible for blocking off the heater core when your A/C is on to prevent the hot...

The temperature or mode a/c doors in the dash heater air conditioner doors have electronic actuators that when they go bad may start to click when the a/c is turned on or when trying to change door position that has...

When the engine turns on, if the A/C switch is off, the compressor clutch is not engaged so the only "noise" should be from the compressor pulley freewheeling. If the air flow is too low at the lower blower speeds,...

The answer to this depends on whether you have switched on heating, cooling (A/C) or neither. In one scenario, for example, if you have not switched on the A/C system, but the A/C is running as confirmed by a visual...

Hello. Thank you for writing in. The climate control utilizes a duct system and blend doors to control the temperature of air entering the cabin. If these blend doors are not mixing the correct air supply than the air entering...

The heater core being plugged is not the most common cause for this vehicle to not give heat out of the vents. If you move controls to heat and do not notice a temperature change when turned hotter the most...

You may have a bad temperature blend door actuator for the left side vents. You should also have the complete system checked (https://www.yourmechanic.com/services/ac-is-not-working-inspection) to make sure you are not low on refrigerant (https://www.yourmechanic.com/services/top-off-coolant) since the left side will be warmer...

Hello. We will need to observe several other factors in order to pinpoint what the issue is. When you say you are turning on the vents, what setting are you turning on when this happens? Is it all temperature settings...

Hello, you are going to need a diagnostic chart for this type of issues. The chart gives you a process to a path of repair or replacement for each code. When you have many system codes (https://www.yourmechanic.com/article/how-to-read-and-understand-check-engine-light-codes-by-jason-unrau) you would first...

Hello. It sounds like the blend door actuator is failing. This door is responsible for blocking off air flow to the heater core when the air conditioning is on. I would recommend having the blend door actuator tested using the...

Turning the actuator to full cold will not find the problem since the actuator internal sensor is bad and cannot control the motor and then will default all the way to heat. You can replace the actuator and run the...