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1998 GMC Z71 4WD, while running the A/C (on vent) and the vents, no matter if the recirc button is pushed or not, the outside of my windshield fogs up down by the defrost vents.

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1998 Nissan sentra ac bypass


Assuming that it is working in frigid conditions, sometimes The
Ac works with the defroster to remove moisture and the fog on the inside windshield. So, turn the defroster of unless you need it when the windshield fogs. You may be able to keep the window clear by opening the outside air vent and increasing the heater temperature.

Feb 13, 2015 | 1998 Nissan Sentra

1 Answer

Where is the " Outside " air vent located? the " circulation " button is for " inside " air only.


Normally the system pulls outside air in unless you select defrost or push the "circ" button to override the system. The outside air comes in from the area in front of the windshield.

Sep 05, 2014 | 2001 Pontiac Bonneville

1 Answer

A/c recirculating light comes on when i first start up the 2004 gmc yukon xl will not go off until recirculating switch is pushed. Sometimes comes right back on and u have to reset it again


{: ) Just let it be as this behavior is part of normal operation. Observe for a while. Check again your mode settings, should not be in defrost or defog mode when recirc is requested. The recirc function is available only in face or bi-level mode.
If the recirculation switch is pressed into the ON position when the mode switch is in an unavailable mode position, then the recirculation switch LED will flash 3 times. If the HVAC control module detects a fault with the recirc door the HVAC control module will try to drive the actuator for a predetermined amount of time, to outside air, which is the defaulted position for the recirculation actuator.
Try settling on the face and bi-level mode. You can manually turn on or off the recirc function and observe some air change on the vents. When recirc is off (light off) outside air will also enter and it will mix with the cold air inside if your a/c is on.
The HVAC system also monitors the inside and outside temperature sensors and uses these inputs to control the opening or closing of the recirculation door. If the outside temp is colder, it may not allow recirc off, sometimes it may not even allow a/c function. You may also have a sticking door or failing actuator. If any of the approaches above doesn't come out well, you may proceed for a scan tool diagnostic test to be sure, if your HVAC system does have a trouble.

Aug 27, 2011 | 2003 GMC Yukon XL

1 Answer

Which car button is for the defroster in a 1995 Honda civic lx? The one with the circulating arrow or the arrow straight through it


Those two buttons are for where the air supply is coming from. The circulating arrow is for recirculating the air inside the car (recirc), and the straight arrow is for bringing fresh outside air into the cars climate control system.

Most often, the recirc button is used for air conditioning (it is easier to cool air that has already been cooled inside the car than the hot outside air) or for driving in dusty or smelly areas (i.e: my cars inside air smells better than the outside air right now!)

The slider selects the defroster. Slide it all the way to the right.

Keep the outside air button selected for using your defrosters. If you have recirc selected and have been driving for a while, if anybody suddenly cracks a window, then the all the windows (including the windshield) in entire car will fog up!!!!

Mar 18, 2011 | 1995 Honda Civic

1 Answer

Why my window is fogging whe i turn the heater ?? i recently bought my toyota carina 3 model 1994 but the window is fogging , what should i do?


Make sure the vent system is set to draw air from outside. If it is set to recirculate the same air that's inside the vehicle without drawing fresh air from outside, the resulting humidity that builds up inside the vehicle can fog the windows even when you run the defrost. You can also try opening the windows a bit to get some more air moving inside.
If it still fogs when the vents are set properly, you may have a leaky heater core. The heater core is a small radiator that is located under the dash that the heater system blows air through to heat the inside of your car and provide heat to defrost the windshield. The fog may be coming from the heater core leaking hot coolant steam that's being circulated through the defrost system. If this is so, you will need to replace the heater core.

Jan 07, 2011 | 1997 Toyota Corolla

1 Answer

2005 Toyota Corolla air conditioner is cold but


The air flow does not 'increase' with the recirc button pressed. The fan motor blows at specific speeds, no matter whether fresh or recirc is selected. The recirc feature is there so that you do NOT admit 'fresh/hot' air from the outside into the AC box. In short, the recirc feature is to re-use, or, recirculate the existing air in the car. When it is properly working, on a hot day, the recirc selection should drop the internal temperature at the center air vent about 6 degrees lower than with the fresh selected.

Jul 18, 2009 | 2005 Toyota Corolla

1 Answer

Dash turned blackish brown and raise up at the windshield causing


It sounds like your heater core may have sprung a leak causing your moisture problems.

May 27, 2009 | 1997 Kia Sephia

1 Answer

Cabin air filter


it;s under the cowl vent panel.

Cowl Top Vent Panel Removal
  1. Remove the windshield wiper pivot arm (17526) . Refer to Section 01-16 for the removal procedure.
  1. Remove the front door weatherstrip (20530) to access the windshield outside side moulding screws.
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  1. Remove the five windshield outside side moulding screws and the windshield outside side moulding (03136) .





  1. Pull the windshield outside moulding (03144) from the windshield glass (03100) .
  1. Remove the three Phillips-head screws from the cowl top vent panel (022A68) .


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  1. Remove the three plastic screws by turning them 90 degrees to unlock.





  1. Remove the six pushpins from the front edge of the cowl top vent panel .
  1. Lift up on the cowl top vent panel and disconnect the windshield washer hose (17A605) at the Y-connector.





  1. Remove the cowl top vent panel .

Mar 15, 2009 | 1998 Mercury Villager

1 Answer

Fogging up issues


If you can feel the air from the blower motor blowing up on the windshield it is probably one of two things. Either your heater core has a leak and the anti-freeze mist film is all over the windows or your heater control valve is not working.
Does the heater get hot or can you feel hot air on the windshield? If so your heater core is probably leaking and making steam inside your car.

Dec 22, 2008 | 2001 GMC Yukon XL

1 Answer

95 nissan quest - strong smell of exhaust in the cabin area


The exhaust leak is almost always broken studs on the exhaust manifolds. It makes a tick noise when cold and usually goes away when the engine warms up. After a year or so, the noise doesn't go away.

Your heater-a/c air intake is at the base of the windshield through the screen on the passenger side. WHen the exhaust leaks from the manifold, the exhaust gas gets sucked into the air intake.
You can put the heater in recirc mode and it will draw air in from inside the car instead of though the outside air intake. You can't leave it in recirc for long in winter or your car will get ice or fogging on the windows from too much humidity. Take it off recirc after 10 minutes.

See this iste for more info

http://autos.groups.yahoo.com/group/villagerquest/

Nov 27, 2008 | 1995 Nissan Quest

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