Heating/Cooling air not coming out of dash panel vents...

Hi bensarabia,

This condition is usually an indication that the a/c refrigerant level is low. The driver's side will always get heating and cooling first. I would recommend having the refrigerant level checked and also having it leak tested.

Thermostat.? if you haven't? Do it first then try it. While the car is running for a while touch the heater hoses that lead to the firewall. if one is cold and one is hot? You have a blocked Heater core. Follow the hoses back to the engine. Unconnect them both. By using a garden hose flush out the heater core do one side and then reverse by doing the other hose Lots of junk will come out so be care ful. Mistake people make is "Flushing the system" That doesn't mean your flushing the heater core.
Seeing that you have done everything else it could be the thermostat which you didn't list or the heater core being clogged. When you finished installing the thermostat and flushing the heater core out. Replenish the coolant system . If you have a bleeder on the thermostat housing? use it . loosen it and top off the fluid until you see fluid comeout of the bleeder. The system being air bound would cause no heat..

After a jumper test on the fans to make sure that they work, you might take a look at your coolant level or temperature sensor. The try testing or replacing any fuses or relays wired into your air conditioning and heating circuit. In my 1998 Buick Regal, the fans never run until the air conditioner or heating fan is turned on. Unfortunately, the A.C. compressor and the cooling fans also kick in when I turn on the heater fan switch. Your best option is to wire the fans to a manual switch on your dash or just drive really fast all the time.

What you are saying is when you turn knob to hot you don't get any heat.? Let's start with the basics. Make sure your cooling system is filled up with coolant. Then with the engine warmedup and the temp gauge on the dash indicating between H and C. Find your heater hoses under the hood and feel them. Are they BOTH very warm or hot? os is only 1 warm and the other cool? If both are warm/hot, and still not getting heat from your vents. You have a problem with either the temp controller or the blends doors under the dash. usually the blend doors and it requires removal of the dashboard to get to it. If the heater hoses are wrm and cold then you may have a plugged heater core or water pump not circulating properly.

A certain amount will run into resavor or draw out after it is shut off no matter what the tempature is, the only exception is if it is low on coolant in the radiator it will draw out of the resavor to maintain the right amount to the cooling system. but when engine is running it should not do either one because the coolant is flowing.

You will have to take it into your nearest a/c specailist as it sound like your A/C canister needs refilling.

your air conditioning system needs recharged. im sure of it.

warm air come out on the passager side you got dual heating control the motor that control the hot and cold is stuck that hapen when the car sit there a long time or the setting dont move if it passager side under the dash you got the heater box about 3/4 down you got a square electric motor start the car gently tap the motor with anything you got most of the time it gonna start moving play with the heater control to see it move good luck pierre

The blend door in the heater box itself is what directs the air to where it needs to go as per selector switch. The heater box is located under the dash.

The vacuum line on the drivers side of the intake manifold just below the throttle body fell off.