Question about 2003 Ford F250 Super Duty Crew Cab

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2012 Ford F 250 defrost will not operate

Defrost will not function on 2012 F250

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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harley9701ha
  • 424 Answers

SOURCE: HEATER STUCK ON DEFROST

Check for vacuum leak at recirculation door under the hood. It is white in color. Find some vacuum hose at a parts store that wil replace the broken hose.

Posted on Feb 02, 2009

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harley9701ha
  • 424 Answers

SOURCE: climate control is on defrost only the auto

Check your vacuum pump located on the right side fenderwell. see if its running. Check the vacuum hose at the hubs for leaks or damage. repair if damaged. check for other vacuum leaks such as the grey hose going to the heater control valve.

Posted on Oct 05, 2009

  • 47 Answers

SOURCE: Truck heater / defrost not working

Sounds like you need to replace your heater core.

Posted on Jan 28, 2010

  • 32 Answers

SOURCE: A/C controler on Ford F-250 not working. A/C blows

No airflow at all or just not cold? The AC only runs in the AC , Max or either of the defrost modes to automatically dehumidify the air to reduce fogging. The other positions vent in outside (non conditioned) air.

Posted on Jul 09, 2010

  • 6 Answers

SOURCE: 2001 ford taurus wagon/air only flows through defrost vents

you have a vacuum leak check vacuum lines

Posted on Apr 20, 2012

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1 Answer

I have heat some times only on defrost ? f250 td 2010


sounds like the mode actuator is sticking on you this little motor turns the vents from floor to vent to defrost ect ! i hope this helps ya out !

Nov 17, 2014 | 2010 Ford F-250 Super Duty

1 Answer

No heat from vents


As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html

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No heat on Oldsmobile Silhouette?


http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

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Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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Hot air on the driver's side vents only?

http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

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Temperature gauge does not move and no heat when heater is ON?

http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html

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1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold?

http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

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No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html
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Ford F150 Ac only blows through defrost vents?

http://technoanswers.blogspot.com/2012/01/forf-f150-ac-only-blows-through-defrost.html

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Dodge A/C come out of defrost vents only?

http://technoanswers.blogspot.com/2012/01/dodge-ac-come-out-of-defrost-vents-only.html

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Ac vacuum line on dodge cummins?

http://technoanswers.blogspot.com/2012/01/ac-vacuum-line-on-dodge-cummins.html

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Ford ranger AC blows cold through defrost vents instead on cabin vents?

http://technoanswers.blogspot.com/2012/01/ford-ranger-ac-blows-cold-through.html

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2005 Chrysler PT Cruiser: A/C Blows Warm?

http://whoisbyme.blogspot.in/2012/06/2005-chrysler-p8t-cruiser-ac-blows-warm.html


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2009 Mercury Grand Marquis: A/C blows Cold From Defrost Vent Only?

http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html

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AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

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Passenger side temperature is warm air out of dash vents?

http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html

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These will help.

Thanks.

Nov 28, 2012 | 2006 Ford Taurus

1 Answer

A/C controler on Ford F-250 not working. A/C blows but to defrost only, nothing occurs when switching to vent control. Please advise. Thank You.


No airflow at all or just not cold? The AC only runs in the AC , Max or either of the defrost modes to automatically dehumidify the air to reduce fogging. The other positions vent in outside (non conditioned) air.

Jul 09, 2010 | 2001 Ford F250 Super Duty Super Cab

1 Answer

Truck heater / defrost not working


Sounds like you need to replace your heater core.

Nov 10, 2009 | 2002 Ford F250 Super Duty SuperCab

1 Answer

Only blowing through defrost vents


defrost is fail safe mode. cehck for a broken vacuum line from the engine to the heater control head. check vacuum reservoir under hood for leaks.

Oct 04, 2009 | 2004 Ford F250

1 Answer

A/c changes to defrost when i put truck in 4 wheel drive


Hello I am Ron ,,check for a vacuum leak or vacuum hose that has collasped under hood,and under dash.Hope this sheds some light on the problem

Jul 19, 2009 | 2002 Ford F250 Super Duty SuperCab

1 Answer

HEATER STUCK ON DEFROST


Check for vacuum leak at recirculation door under the hood. It is white in color. Find some vacuum hose at a parts store that wil replace the broken hose.

Jan 31, 2009 | 1992 Ford F250

1 Answer

Ac vent stuck in defrost


find the vacuum leak in the engine compartment vacuum hose from engine to firewall, and vacuum reservoir for hole (in engine comaprtment or wheel well

Oct 31, 2008 | 2002 Ford F250 Super Duty SuperCab

1 Answer

Air conditioner blows through defrost vents instead of dash AC vents when engine under load. Vacuum tank under hood holding pressure. Tested this by building vacuum and turning off truck. Then...


LOOK AT THE WHITE PLASTIC HOSE GOING TO THE RECIRC VACUUM ACTUATOR UNDER HOOD. THIS IS ON TOP OF A/C BOX BY RIGHT SIDE OF FIRE WALL YOU WILL FIND THIS HOSE IS STARTING TO COME APART REPAIR HOSE AND PROBLEM FIXED.

Sep 13, 2008 | 1994 Ford F250 Supercab

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