Question about Ford Escort

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I have a 98 escort se in defrost mode very little air blows out even when fan is on high , air comes out dash vents

Selector is in defrost mode but doesnt come out defrost vent for windshield

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  • Dean Eblen
    Dean Eblen Mar 20, 2014

    control arm moves from defrost to dash vent heat to floor vents also ac unit doesnt work .

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  • Contributor
  • 37 Answers

Check vacuum lines and diaphragms.

Posted on Mar 31, 2014

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Posted on Jan 02, 2017

  • 20 Answers

SOURCE: Heat wont blow through heater or defroster vents

common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Posted on Feb 23, 2009

  • 37 Answers

SOURCE: PROBLEM WHEN SELECTING THE DIRECTION FOR THE AIR

Sounds like you have a supply vacuum problem. When you lose supply vacuum to the control head it defaults to defrost.

Posted on Mar 13, 2009

  • 1 Answer

SOURCE: Dash vents will not blow air. Defroster and floor vents blow fine.

Is it a new vehicle? I had a new vehicle that had the same problem. Answer was that the holes weren't punched out of the vent.

Posted on May 23, 2009

  • 432 Answers

SOURCE: All Air Conditioning blows our the defrost vents

Some thing you could look at would be this. The control is usually fed by a vacuum line or small hose thats is connected to your intake manifold.
With a cold engine,look for a skinny vacuum hose that runs from the intake toward the fire wall . It should be going inside the cab and connecting to the A/C vent control.Some times the hose becomes disconnected or splits or cracks due to heat under the hood.
Thats usually the trouble.
I hope this helps you.

Posted on Oct 06, 2009

Mr BrokRench
  • 1623 Answers

SOURCE: No air is coming through

The actuator door for the middle ducts is not opening.

Posted on Jul 01, 2011

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I have a 98 bonneville se. the blower fan only comes on when the knob is all the way up and it ONLY blows heat and absolutely no cold also the air only blows out the defroster and the floor


How did you test the A/C system ? Hook up gauge manifold , test A/C pressures ? Manual or automatic climate control ? The blower motor only working on high means the blower motor resistor is bad ! Did you hook up a scan tool an check high an low pressure switchs inputs to the PCM - engine computer . Does the A/C compressor clutch engage ? turning on the compressor ? Moving the mode switch does nothing . Doesn't move from floor to vent to defrost ? Probably the mode door actuator ! Don't think the HVAC control panel is bad . Just a few little things . Pushing the A/C button on the control panel just send a electrical signal to the PCM , the PCM will energize the A/C clutch relay , turning on the compressor .

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May 19, 2017 | 1998 Pontiac Bonneville

1 Answer

98 carolla heater blows cold ,I flushed system replace t stat check flow switch its working. when defrost, heat lever in heat position air blows out ac vent.


The mode selector is bad. IF you look at the plenum (where the fan motor is ) you should see two levers one is hot cold the other is mode. Check them by moving the controls and see if they move.
If the mode lever moves then the door on the inside is broken or something could have fallen in the vents and is blocking it.

Jan 15, 2016 | AC Cars & Trucks

1 Answer

Air Conditioning problems.


Fan motors in cars fail commonly. They wear out the brushes and the motor stops or the fuse blows. The other issue with the mode selector may not have anything to do with the motor. The actuator on the mode selector can become stuck or broken and then the air delivery wont go to the right area. All these things should be visible under the dash or behind the glovebox.

Jan 14, 2016 | 2006 Ford Focus ZX4

1 Answer

96 accord lx. Little to no air coming out of vents on all fan settings. All fan speeds work. The fan sounds like it is running and changes speed when fan setting is changed. The vent flap sounds like it is...


If the fan clearly comes on and you can hear it switching speeds. Check your selector switch on where you want the air to come out of and verify its not on the floor or defrost . The only other thing It could be would be that your ducting has somehow become misaligned resulting in a leak. Turn the system on high and feel around under the dash on both passenger and drivers sides...the exaust has to be there somewhere

May 25, 2011 | 1996 Honda Accord

1 Answer

Heater not blowing air out of ducts


CHECK THE FAN AND SEE IS IT IS EVEN BLOWING PERIOD. IF IT IS THEN SEE IF THE SELECTOR IS NOT MOVING IN THE BOX UNDER THE DASH. THIS SELECTOR ALLOWS FOR FLOOR VENTS, FRONT VENTS OR DEFROSTER IF SO EQUIPPED.IT MAY JUST BE THE CABLE IS EITHER STUCK OR BROKEN UNDER THE DASH. GOOD LUCK!

Dec 11, 2010 | Chevrolet 1500 Cars & Trucks

1 Answer

When I turn my vent selector to defrost on the far right (air con off)the air conditioning comes on. The dash vents will blow ambient air, but defrost setting blows air con. Any ideas?


It's normal for the A/C compressor to come on with the defroster to dehumidify the air so the windsheild won't fog up under humid conditions. You can still control the air temp. out the vents with the temp. select switch.

Jul 19, 2009 | 2005 Jeep Wrangler

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