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The blower fan works fine but it wont change from panel to floor it only blows from front defrost why?
Wiki User
∙ 10y ago
Not knowing what vehicle you have, many vehicles use vacuum to operate some, if not all, the HVAC (Heating, Ventilation, Air Conditioning) controls. If the vacuum supply is cut off for whatever reason the HVAC goes into defrost mode. I suspect you have a disconnected/broken/damaged/pinched vacuum supply line usually found under the hood leading from the engine into the firewall.
Wiki User
∙ 10y ago
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Why air will not blow full through upper vent only in your 2000 Pontiac Grand Am Blows at bi-level floor and defrost Even when dial is set to recirculate still blows bi-level?
blower motor resistor
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.
Why doesn't heat blow out floor only?
the heat blows out the defrost when it should blow out floor vents only
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.
Why won't heater change from defrost to floor on 2001 Ford F-350?
you have a fuse out...
How do you fix the air conditioning if it only blows through the defrost and floor and not the vent in a 89 Chevy S10?
Check under the hood for a broken or disconnected vacuum line.
The electric climate control on a 1999 Grand Prix GT only blows air in the dash and not to the defrost or floor setting is the control board bad?
Something like this just happened when my a/c blower was just changed. The mechanic forgot to plug in some of the wires around my blower which caused the air to blow out the dash and the floor only. It was three wires (one yellow, one white, and one red)that my husband pluged in. After that it worked fine! Just a suggestion!!!
1979 Corvette and the AC only blows out on the floor Any answer's?
The 1979 Chevrolet Corvette air flow door might the stock in the position so that air only blows out of the floor vents. The air flow door is located next to the blower fan.
The heat air and defrost do not work What is wrong?
The year, make and model info would help. Also need to know if the blower motor is working, just not getting any heat, or not changing function between defrost, dash or floor vents.
Dodge Stratus air conditioner blows only on high?
The blower might need replacing. Normal cause is a failed blower resistor, caused by a blower fan that is failing.The resistor and fan are located above the passenger side floor behind the glove box.
'2000 gmc jimmy no floor heat but has defrost and vent heat'?
my 1998 gmc jimmy has no floor heat but i have defrost and ven heat
Why does your air only blows out the front vents and not the floor are defrost on your 2003 dodge ram?
This is the same on all cars. When the air flow is OFF in a section, the it blows stronger to the other vents. In this case the ones for the windshield. This makes defrosting quicker so you can start driving safely sooner.
