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99 astro van will not blow air out of the vents when switched to dash vent only blows in defrost and floor?
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∙ 11y ago
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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 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
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.
'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.
The air conditioner only blows through the floor and defrost vents on a 2003 Saturn L300 how do you fix this?
Many HVAC systems operate with vacuum supplied from the engine. If the vacuum supply is cut off the system goes into default position which is floor and defrost. Look under the hood for a small vacuum line from the engine leading into the firewall that is damaged, cracked, pinched or disconnected.
Vacuum lines on caprice the air blows from the defrost and floor but not the vents can anyone answer?
On the back of the intake manifold are some vacuum hoses. Check and be sure all are attached . If they are good the you probably have a blend door problem.
1998 Durango Vent controls stuck in defrost mode will not blow through dash any suggestions Ac works but only blows to front windshield and floor.?
Check for vacuum leak either under dash or hood Check for bad vacuum motor under dash Defrost is the default setting for this vehicle
What could the problem be on 1988 Ford Aerostar when AC blows air out dash vents and floor but heater and defrost do not blow any air at all?
A vacuum leak, or one of the doors is sticking/bad vacuum motor in the heater box.
93 Lincoln Mark 8. No air blows through front dash vents only defrost and floor cold or hot. It doesn't matter. I have checked for vacuum leaks but there are none. What else could there be?
Check the blend door actuator.
