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Because there is a vaccume leak @ the reservoir or the hoses going 2 the reservoir There is a small,main vaccume hose from the intake manifold that supplies VAC 2 the AC system.The hose is usally 1/8 0r 3/16 in size.Older fords have a tank that looks like a fruit juice can for a reservoir.U have 2 have Engine VAC @ the AC Controls 2 work.If a hose or line is Cracked,the AC will usally blow out the dash only when not under acceleration.when u ACC the air will go 2 the floor.There could even B a hose off under the Dashboard. Some cars or trucks have small rubber hoses or small plastic hoses with rubber conections going 2 the intake manifold.

Glenda, most systems use either mechanical or vacume to operate the vent doors on the airflow ducts. You either have a vacume leak or the mechanical lever needs adjustment. . John In Montana

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โˆ™ 2015-07-17 17:38:39
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Q: Why would the AC and heater blow air through the defroster or the floor vents but not through the dashboard vents?
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Why would the ac and heater blow air through the defroster or the dashboard vents but not through the floor vents.?

It should blow through the floor vents. Modern vehicles generally use movable baffles in there HVAC systems, to direct air flow where the controls indicate. If the controls allow airflow to the floor, but nothing flows out, there is a malfunction between the control switch and the actuator that directs the flow.

What do you look for in having the blower blow to the floor and through the vents. Currently no matter how you adjust the AC or heater control it blows through the defroster by the windshield?

your switch cable might be broke you will have to remove your dash

Why does your car heater smell?

If the heater has a sweet smell it could be that the heater core is leaking engine coolant. When the leak gets worse you will have a wet floor on the passenger side and the windshield will fog up when you turn on the defroster.

Why is the Right passenger car floor wet no rain?

You didn't mention what vehicle you have but in most vehicles the heater core is located under the dash on the passenger side. The heater core is known to spring a leak and show up on the passengers floor. Turn on the defroster and see if your nose senses the sweet smell of radiator coolant. The inside of the windshield my fog up when the defroster is turned on, this would also indicate a leaky heater core.

Where would your 95 ford explorer leak if the heater core is no good?

On the passengers side floor board or if the heater core just has a small crack then it will fog up the windshield when the defroster is turned on and smell very bad......

You have a 2004 RAV4 and when using the defroster and heater water drips from the engine compartment as if the AC has been running The dealer said this was normal but you have never noticed this befor?

it is normal. when you use the defroster, the air conditioner is also working to help dry the air passing over the windshield. this moisture is condensed by the cool evaporator and drained through the floor of the car.

Why would hot air come out of the defroster and vent work but not the heater on 95 S10 blazer?

What causes heat to only come out of the defrost and vent but not the floor of a 1995 S10 Blazer?

What are the signs of heater core going out in 98 s10?

Finding coolant on the passengers side floor. Turning on the defroster and the inside of the windshield fogs up. Sweet smell of coolant inside vehicle.

Will a fifty gallon water heater fall through a mobil home floor?

make sure the floor has no water damage, a water heater that size will weigh 350 lbs when full. it may fall thru if floor has any rot in it.

Blower works but can not control blower to panel defroster or floor?

Check your servos.

How do you know if a heater core is bad in a 1997 Cherolet S-10?

Typically the front passenger side floor/carpet gets soaked with engine coolant and when you turn on the defroster, the inside of the windshield fogs up.

What would cause water to leak on the passengers side floor?

busted raditator , check heater-core . most are found inside up under your dashboard . hope that helps you !

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