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Hot air comes out of the floor vents when i turn on the air condi
1994 325i
I have very hot air coming from the floor vents when i turn on the air conditon. However the top vents will continue to blow good cool air. The dash feels very hot.
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check the cabin air filter if equipped, Make sure that the air is not coming out of the floor vents or defrost. The door that diverts the air maybe stuck, pushing air out defrost/floor vents
Sounds like your heater coolant hose door flap is broken or loose. May want to check behind the heater controls, if your components are mechanically operated. If electronically, may need to perform more troubleshooting before replacing this component.
There are 2 vacuum lines that control your hvac system, one of them is either disconnected or dry-rotted and needs replaced. I was able to fix it by purchasing a 3-way splitter for a vacuum line, bought some rubber vacuum line and spliced into the cruise-control vacuum line. Worked like a charm. If it's not that, you could have a vacuum leak anywhere alone the line from the intake manifold to the evap canister
Check to see if the air coming from the vent is also lukewarm. If it is and assuming the coolant level is fine, the most likely cause is a bad thermostat. If the air coming from the vent is hot, you may have an issue with the blend door which determines air flow.
behind the center counsel between the floor and the heater housing is a part that is called the blend door actuator. these usually go bad and have to be replaced.
In my 1998 Honda Accord Lx the hot air does not come out of the heater vents in the floor, the same is true for cold air in the middle vents on the dash. The side vents on the dash work fine.
did you cheked if there is enough refrigrant ( freon ) in your tubes by measuring the pressure . if there is you may need to check your condensor its may be clogged and not letting enough air comes through to cool the refrigran
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