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Why does the air not blow out the vents or floor but only in the defrost vent?
Wiki User
∙ 10y ago
you have vacuum line off or stopped up going to heater control.
Your post led me right to the problem. broken vacuum line under the hood at the canister. I used a short piece of shrink tubing to repair the line.
Wiki User
∙ 10y ago
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Why doesn't heat blow out floor only?
the heat blows out the defrost when it should blow out floor vents only
Air vents on your 2005 f-250 6.0 diesel blow only out defrost ports and not from vent or floor What is going on?
you have a vacuum leak. defrost is the default when a vacuum leak is present.
Why heat blows out vents only not defrost or floor?
Most likely a bad or disconnected vacuum hose to the defrost/floor selector in the heater ducting.
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Vacuum leak
Why would the AC in an 1997 Oldsmobile Regency only blow air out of the floor and defrost vents?
on my 1992 road touring itdid the same thing and it was the computer but it only cost 102.00 from gm
Why do you get hot air at floor and defroster vents but only cold air at the dash vents vents in a 1995 chevyvan 20?
the middle vents only supply air from the ac unit using a separate in dash fan. the floor and defrost vents come only from the heater
Why would the air conditioning only blow air from the defrost and floor vents and not the dash vents on a 1996 jimmy?
This is a very common problem and you need to check for a vacuum leak, broken vacuum line or a loose vacuum line......
1995 G20 Van - Why will Air Conditioning only blow out of the defrost and lower floor vents and not the dash vents?
Air flow is controlled by plastic doors which are controlled by vacume motors. Could be they're stuck, or a vacume leak.
92 lumina and when you turn on the heat or air it will only blow from the floor and defrost it wont blow from the front vents what would cause this problem?
vacuum leak the vacuum reservoir is below the left head light, check the hoses
Why does my air only blows out my front vents and not the floor or defrost on your 03 dodge ram?
There may be several reasons why the air only blows out the front vents and not on the floor or the defrost on the 2003 Dodge Ram. The fuses may be blown, or the heating coil is not working correctly.
How do you fix the vacuum line for a 99 GMC safari?
The AC does not blow on the main front vents. Only rear and defrost.
Why would the air conditioning only blow air from the defrost and floor vents and not the dash vents?
I would think that is a vacuum or a linkage problem with the heater control assembly (where all the buttons/slides are for changing between floor/defrost/vent) Had a diaphragm go bad on one once, and in a jeep cherokee, a slight collision with a guard rail knocked a vac line off for the vent controls, and ac only worked from defroster.
