Question about 1966 Ford Mustang

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Hearet problems heater works but when you drive down the road the fresh air overtakes the heater how do i shut off the fresh air vents from outside air ?

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On these older mustangs, the vent is shut off by a mechanically operated door that has a foam seal on it. The proper fix is to remove the heater and replace all of the foam pads and seals. Kits of all parts needed are readily available from most Mustang parts sources. While you're at it,be sure to check that the heater core doesn't need to be replaced. A quick and dirty work around it to stuff some wadded newspaper up into the fresh air vent. Access to this area can be through the heater door.
Hope this helps and have a super day!
Ron

Posted on Feb 20, 2009

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This is useally done with vacum pressure I would check my vacum lines

Posted on Dec 30, 2008

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No heat to vents, heater hoses are hot, fan works . When van sits at idle warm air in vents but goes cold when driving down road


your heater core is blocked where the hoses connect to it suggest you have it looked at or you can disconnect the hoses your self in the engine compartment and use a hose to flush the heater system failing that you could have a faulty heater tap they ar known to clog and rust up as well good luck

Nov 14, 2013 | 2000 Dodge Caravan

Tip

Tips for operating Air conditioning system on Toyota Hilux and someother...


To cool off your Toyota after it has been parked in the hot sun, drive with the windows open for a few minutes. This vents the hot air, allowing the air conditioning to cool the interior more quickly.

Make sure the air intake grilles in front of the windshield are not blocked (by leaves or snow, for example).

On humid, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield.

Keep the area under the front seats clear to allow air to circulate throughout the vehicle.

On cold days, set the fan speed to high for a minute to help clear the intake ducts of snow or moisture. This can reduce the amount of fogging on the windows.

When driving on dusty roads, close all windows. If dust thrown up b the vehicle is still drawn into the vehicle after closing the windows, it is recommended that the in intake be set to FRESH and the fan speed to any setting except "OFF".

If following another vehicle on a dusty road, or driving in windy and dusty conditions, it is recommended that the air intake be temporarily set to RECIRCULATE, which will close off the outside passage and prevent outside air and dust from entering the vehicle interior.

HEATING

For best results, set controls to;
Fan speed ---- Any setting except "OFF"
Temperature----Towards WARM (red zone)
Air intake ---- FRESH (outside air)
Air flow ---- FLOOR
Air conditioning ---- OFF

For quick heating, select recirculated air for a few minutes. To keep the windows from fogging, select fresh after the vehicle has been warmed.

Press the "A/C" button on for dehumidified heating.

Choose floor/windshield air flow to heat the voltage interior while defrosting or defogging the windshield.

AIR CONDITIONING

For best results, set controls to;

Fan speed --- Any setting except 'OFF"
Temperature --- Towards COLD (blue zone)
Air intake --- (outside air)
Air flow --- PANEL
Air conditioning --- ON

For quick cooling, move the air intake selector to recirculate for a few minutes.

VENTILATION

For best results, set controls to;

Fan speed --- Any setting except 'OFF"
Temperature --- Towards COLD (blue zone)
Air intake --- (outside air)
Air flow --- PANEL
Air conditioning --- ON

DEFOGGING

The inside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone) to heat; COLD (blue zone) to cool
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- ON

The outside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone)
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- OFF

On humid days, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield.

DEFROSTING

The outside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone)
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- OFF

To heat the vehicle interior while defrosting the windshield, choose floor/windshield air flow.

on Feb 14, 2011 | Toyota Pickup Cars & Trucks

2 Answers

Why are my windows fogging up in my 2009 trailblazer


Depending on the air temp and humidity, you may be running the HVAC on recirculate when it should be on fresh.
You need fresh outside air so the ac compressor can dry it before it hits the windshield.

Jan 16, 2013 | Cars & Trucks

1 Answer

98 caravan outside air always coming in


Put the vent on inside air circulation,not fresh air,then no air will come out.

Dec 03, 2012 | 1998 Dodge Caravan

1 Answer

Smell comes thru air vent.


You might have both. The fresh air intake is under the windshield wipers, that vent takes in the fresh air from outside. The filter is usually in the rear seat section on vans and suvs, somewhere, sometimes up front under the dash. You can switch your ac or fresh air control to recirculate and it will cut off the outside air. We always do it on dusty roads and dead skunks. Hope this helps.

Apr 14, 2010 | 1995 Jeep Grand Cherokee

1 Answer

The heater just up and quit working in my 1997 Jeep Grand Cherokee with no warning whatsoever. I can feel heat coming through the vents when going down the road, but the fan isn't working on any speed....


Does the fan work on A/C? If the fan isn't blowing, check the fuse. Heat when going down the road is simply an indication that the air from outside is coming through the system. If fuse is fine, blower motor is probably out.

Jan 05, 2010 | 1997 Jeep Grand Cherokee

1 Answer

2004 Odyssey, heat and A/C do not work unless van in motion


Since warm air eventually comes out when the vehicle is in motion, you may have an air mix door that is stuck in fresh or is somehow blocking warm air from the heater core.

To see if the air mix control motor is bad, you need to retrieve your Diagnostic trouble codes (DTC's) from the heater control panel. To run the diagnostic function, do the following:
1. Turn the ignition switch ON (II).
2. Turn the fan switch OFF.
3. Press the recirc control button to select Recirc (recirc light on.)
4. Press and hold the recirc button to select Fresh (recirc light off) and continue to hold the button down until the recirc light comes on for two seconds and then goes off.
5. If the system is okay, the recirc light stays off.
6. If there is a problem, the recirc light blinks the DTC to indicate the trouble. One blink=a problem in the air mix control motor circuit. Two blinks=problem in the mode control motor circuit
Three blinks=problem in evaporator temp sensor circuit.
7. Turn the ignition switch off to cancel the self diagnosis function. Run the diagnostic again after repairs are complete.

Note: the air mix control motor has a rod which connects to a plastic link. The link controls the mix doors and also connects to the heater control water valve via a cable. The air mix motor may check okay, but if the link is broken then you will still have problems. the motor is on the bottom of the heater unit in the front passenger's foot well.

May 10, 2009 | 2004 Honda Odyssey

1 Answer

No air coming through the vents


Sounds like the door that brings in fresh air is not closing enough so when you get to moving it is not letting the cab recirculate the inside air and bringing in some from the outside which comes from the bottom of the windshield on the outside. along with when you get to hitting the gas going down the road you might be loosing a little vacuum and that door going to your vents might close a little.. ? what you thinkin? just a few ideas might not be a fix though thanks Jerry

Apr 21, 2009 | Chevrolet K2500 Cars & Trucks

1 Answer

A/c vent issue


heater blowing cold when engine idleing,works good when rpm are up. what is problem? pete

Jun 06, 2008 | 1997 Nissan.5 Altima

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