Why is my Mercury Grand Marquis not blowing air?
Why is my Mercury Grand Marquis not blowing air?
This 2009 Mercury Grand Marquis came in with the complaint the air conditioner would only blow air through the defroster vents. Rarely would air come out of the face vents. This is a common problem and can be expensive to repair. A work around, of sorts, is to manually drop the blower speed to the lowest speed setting.
Why is there no air coming out of the vents?
If this filter becomes clogged due to lack maintenance it will stop or slow the flow of air exiting the vents. To check this filter locate the filter housing which can be either under the dash on the passenger side or under the hood of the car, near the base of the windshield on the passenger side, remove the cabin air filter and inspect.
How do I stop no air from dashboard vents?
This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow. The flow should stop and start again, if the thumb wheel does not make a difference the problem is somewhere else.
How to troubleshoot and repair vents low air flow?
Easy step by step guide one how to troubleshoot and repair vent low air flow, this article pertains to most vehicles. Step 1 – Most air control vents are equipped with a flow control door that is located at the vent outlet. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door.
This 2009 Mercury Grand Marquis came in with the complaint the air conditioner would only blow air through the defroster vents. Rarely would air come out of the face vents. This is a common problem and can be expensive to repair. A work around, of sorts, is to manually drop the blower speed to the lowest speed setting.
If this filter becomes clogged due to lack maintenance it will stop or slow the flow of air exiting the vents. To check this filter locate the filter housing which can be either under the dash on the passenger side or under the hood of the car, near the base of the windshield on the passenger side, remove the cabin air filter and inspect.
This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow. The flow should stop and start again, if the thumb wheel does not make a difference the problem is somewhere else.
Easy step by step guide one how to troubleshoot and repair vent low air flow, this article pertains to most vehicles. Step 1 – Most air control vents are equipped with a flow control door that is located at the vent outlet. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door.
How is the heat in a Grand Marquis controlled?
With the engine at full operating temperature, locate the two heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If they are both hot, the heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator.
How can I tell if my Grand Marquis has a leak?
If there is a leak, what you described is what happens. Check under the dash for disconnected, damaged, dry rotted, vacuum hoses as well as under the hood. If you are lucky, you will hear a hissing sound from the leak with the engine running.
How to do the self test on a Grand Marquis?
To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTOMATIC button within 2 seconds. The display will show a pulse tracer going around the center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
With the engine at full operating temperature, locate the two heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If they are both hot, the heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator.
If there is a leak, what you described is what happens. Check under the dash for disconnected, damaged, dry rotted, vacuum hoses as well as under the hood. If you are lucky, you will hear a hissing sound from the leak with the engine running.
To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTOMATIC button within 2 seconds. The display will show a pulse tracer going around the center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
Are there any problems with the 2004 Mercury Grand Marquis?
See all problems of the 2004 Mercury Grand Marquis . 1. Rear seatbelts often jam and have to be unlocked by a professional. 2. Blend door switch that controls heat and air conditioning gets stuck on heat and blows extremely hot air year round even if the unit is turned off. Vehicle is in motion on highways and city streets. 3.
When does Mercury Grand Marquis climate control go on back order?
So when it quits you will always has a defroster, the heat and air are only a comfort issue. Nice huh. They are $650.00 and are on back order by 1069 until July 2010, at which time there is supposed to be more than two thousand available. Which tells me they should be put on a recall.
Where is the vacuum harness on a Mercury Grand Marquis?
Feed a tie strap around this part so it clamps the vacuum harness to the control head. I put one tie strap on either side of the black vacuum supply hose in the center of the harness. Operate the controls to be sure it is fixed. If you wish, you can disconnect the vacuum harness under the dash for easier working room.
Where are the climate controls on a Mercury Grand Marquis?
Select the placement of the heating or air conditioning control part: Select an entire interior climate control unit faceplate or an individual knob or switch that fits onto the dashboard. There are also products that fit behind the dashboard panel trim of the Mercury Grand Marquis LS.
When did the Mercury Grand Marquis become stand alone?
The Grand Marquis was the premium trim level of the Marquis product line and then became a stand-alone model in 1983. After driving your Mercury sedan for many years, the controllers for the heating, ventilation, or air conditioner may need to be replaced so that you can maintain climate control and interior comfort of the vehicle.
