Park avenue sometimes blows hot and cold air out of dash
Sometimes the diverter valve behind the glove compartment doesnt work right and allows air to flow from dash which is hot for the passenger and cold for the driver. what is the valve called behind the glove compartment? I have heard it will cause the problem. I want to buy one but dont know what its called
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It sounds like the flapper valve behind the dashboard that diverts the incoming air from outside air to AC cooled air is not working. The cable wire may have come loose. It's located under the right side of the dash. If it's like my 1989 - you can access it by removing the glove box... fairly easy to do, just open the glove box and remove the upper and lower phillips head screws, and gently pull the glove box out and unplug the wiring connector on the left side. Also check to see if the solenoid valve is working when you change from off to heat or cool.
under the dash you might be able to reach it if you open the glove box and lower the door down by pressing the two taps on the sides of the glove box the lever is to the left alomost behind the radio but closer to the glove box. if you can't reach it you will have to remove the radio to get to it then.
If the heater coil was bad, it would be leaking radiator fluid... probably into your dash/floorboard (depending on where it is installed in your model car). There is a switch that diverts the hot radiator fluid through the heater coil when you want heat. There is also an air diverter valve that helps to mix the hot and cold air. The fluid valve is controlled by the A/C settings control. The one that you use to choose between heater/air conditioner/vent/ defrost. The air diverter is controlled by the temp mixing controller. The most simple explanation is that one of those valves or the controller of one of those valves is not working. If the hot water cant be diverted through the heater coil, the coil can't exchange the heat (warming the air). If the air diverter (hot/cold controller) cant move to add heat, then all you will feel is air from the vent side (from outside) or from the A/C cooling the air.
I would guess that its either a controller or one of the valves themselves. Odds are, it is a controller. That tends to be what malfunctions first.
Could be the diverter valve. It's the one located near the firewall in the engine bay. The valve is in-line on one of the two coolant hoses that run through the firewall. Have a helper rotate the temperature knob back and forth, with the ignition turned on, and you watch to see if the valve is being adjusted. I'm guessing it isn't. Best of luck!
open the glove box and make it fall down.behind the glove box there are two melel rods one on top one on the bottom. move the top one to the passager side, everytime you shut the car off you have to do this
Three possible issues. First... which side seems to respond to to the control input? That will tell. There is an actuator behind the glove box slightly above it. You can see it as it is attached with the metal rod. Simply open the box and pull it down. There are two rubber keepers that flex and allow it to open completely. When you id the part...simply try to move it (the rod) and the actuator by hand. A good actuator cannot be moved by hand. You can also start the car and select between hot and cold and it should move as well as the one just below it.( just about even with the bottom of the glove box. Let me know and I can give you a little more info later...