Question about 2003 Hyundai Elantra

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Re: 2003 Hyundai Elantra 4cyl. How do I get to the mode door for the defroster to check if it's moving freely? Defroster is only blowing air out of ?75 of the vents below windshield.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

short shadey
  • 421 Answers

SOURCE: Climate Control Air Conditioning

check for vac leaks under hood and dashbord

Posted on Sep 01, 2008

junkman1249
  • 552 Answers

SOURCE: heat only blows out of dash vents, will not blow out of defroster

vvacum leak. in back of your temp control unit there is a series of vaum lines attached together they might even be in different colors these lines go to the vent and they open and close them when you slide the lever over this piece needs to be replaced

Posted on Dec 05, 2008

  • 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

cadman000
  • 607 Answers

SOURCE: Air is blowing out of defroster and floor but not main dash vents

Check for vacuum hose leak.

Posted on Jun 17, 2009

ghost4548
  • 776 Answers

SOURCE: The heater/air conditioner fan diverter on my 2003

Either the "MODE" control cable has come loose from the actuator pivot connection, or the MODE door inside the air box is broken.

Posted on Oct 10, 2010

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1 Answer

My air runs cold but is stuck between defrost and front vent. How to fix


Pull the control panel out of the dash and see if the mode control vacuum switch has a good vacuum source or the switch itself leaks vacuum. The mode control is what moves the doors that diverts the air flow around to the vents, defrost and floor.

Sep 20, 2016 | 2004 Hyundai Elantra

1 Answer

A/C blows out defroster only


B lend door not working, There is a electric motor the moves the door when u want air in a different vent, UsuaLLY mounted on heater box.Get a manual on your car and find out where it is,

Jun 14, 2012 | 2003 Lincoln LS

1 Answer

1998 blazer heat works great but defrost doesnt, could there be a blocked hose and how do i check?the defrost at the front wont blow.


if you have heat and nothing blows on defrost then this is a mode door problem that is not changing from floor to vent to defrost mode.it could be the mode switch or the mode door not working.the mode door is on the air duct under the dash and you can manually move it when you disconnect the control with your hand it should move freely.some of these have a small motor that moves the door.and if you move the switch in different modes or better have someone move the switch while you see were the door is the one that is moving is the mode door.if it won`t move on defrost tap the motor and see if it starts to work.if it does then it will have to be replaced if not it could be a switch problem.

Oct 26, 2011 | 1998 Chevrolet Blazer

1 Answer

What is the name of the pulley that is located behind the passenger front wheel that works with the airconditioner and defrost?


I think you are talking about the compressor clutch pulley.
This is the one that clicks on & off when you turn on the air conditioner and in many cars the defroster.
Gary

Jul 24, 2011 | Hyundai Motor 2003 Elantra

1 Answer

The heater/air conditioner fan diverter on my 2003 Elantra doesn't work. It only blows air from the bottom, not the A/C vents or the defroster. Advice?


Either the "MODE" control cable has come loose from the actuator pivot connection, or the MODE door inside the air box is broken.

Sep 26, 2010 | Hyundai Motor 2003 Elantra

1 Answer

I have a 1996 cherokee country. When I use y


Could be the control switch itself. Or possibly the actuator that moves the door from defrost to heater. With the heater on, try switching from defrost to heat and try to hear if you can hear anything in the dash operating.

Mar 09, 2010 | 1995 Jeep Cherokee

2 Answers

Air blend doors do not work. Air blows from defroster vents


check or loss of vacuum to mode control switch in dash ac control. these are not blend doors, they are air flow control, a blend door controls the air temperature not where it comes out.

Aug 14, 2009 | 2001 Cadillac DeVille

1 Answer

2005 Wrangler X a/c only blows from defroster


Check under your hood for a loose or leaking vac line , The A/C system on your jeep uses manifold vac to move the air mix doors and with no vac the air mix door will move into the defrost position. Find your vac leak and that will fix your problem.

Jul 10, 2009 | 2005 Jeep Wrangler

1 Answer

Ac on 2003 f150 supercrew blows air out defroster when on max


Check for vacuum leak going to air inlet door. Should be a white vacuum hose.

Jun 21, 2009 | 2007 Ford F-150 Harley Davidson

4 Answers

Climate controls


Car manufacturers use the defrost mode as a default for safety reasons. Being they want you to be able to defrost the windshield no matter what. So when something goes wrong the system automatically goes to the defrost mode. You most likely don't have the vacuum hose connected under the dash at the climate control assy. Or if this vehicle doesn't use the vacuum hose style you may have not plugged in one of the connectors under the dash or behind the climate control assy. Good luck.

May 21, 2009 | 1997 Lincoln Continental

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