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What is causing very little air to flow out of my vents?

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This could be a few things....Blower motor could be wearing out slowly....,The blend vent doors inside of dash could be stuck at a half way position...Or Blend vent door actuators inoperable..You don't state your type vehicle but in any case like this take it to dealer and have it scanned to save time and money....You may have to remove dash for a blend vent door problem....Be positive of problem before guessing....Only a dealer can scan those type of HVAC Issues...

Posted on Dec 10, 2014

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there will be a air flow setting knob that controls whether air is defrost or on feet or from the console vents.

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Ac is blowing out of defrosterandnot panels in the dash. Air is cool cold air will blow out of rear seat panel/vent 1998 ford explored


The most common cause is a bad blend door actuator which controls air flow throughout the cabin. When air flow only flows from 1 section (either floor, vent, or defrost) it's an indication that the blend door actuator is either stuck or broken.

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1 Answer

I have added the gas in my A/C at home but no air flow from vent


Your message is a bit confusing but since there is a vehicle model shown, I'll assume that is the A/C causing problems.If the blower does not push air on either heating or A/C settings, the bearings of the motor may have gotten gummy and are not allowing the motor to spin up. Check the different speed settings for the blower, preferably with the controls set to heating since there are additional controls when on A/C that can confuse troubleshooting. If the highest speed is working, then the speed control resistor has failed. If it does not move air regardless of setting, then the blower motor has failed or the bearings sticky.
If you have added gas to your home A/C, I hope you know which gas is used (R-22- NOT R-134 as in cars) and have not overcharged it since that can caused very high pressures that can damage your system. Different systems also have different intake and output pressures with which the compressor and other system components work best.

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1 Answer

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is the fan motor working at full speed
check for blocked cabin air filter
the vacuum only works the vent controls and as you can feel the changes of the vents , it is not vacuum

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It might be because recent owners smoked cigarettes in the vehicle. Also, the AC vents may have a little mold which can cause a bad smell until the air flows through.

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