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Anonymous Posted on Oct 01, 2013

Defrost switch I have a 2004 neon the knob for the front defroster will not stay on.

5 Related Answers

Anonymous

  • 85 Answers
  • Posted on Nov 23, 2008

SOURCE: Heater/AC only works thru defroster vents on '98 Contour

you prob have a vac leak on the back of the intake. good luck

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Marvin

  • 85242 Answers
  • Posted on Dec 04, 2008

SOURCE: Air duct doors fail to operate when using the selector knob.

There is a very small black hose that provides vacuum to operate the different vacuum motors in the system through the switch you mentioned, that switch simply diverts vacuum to what ever air outlet u select, the vacuum comes from the engine, it goes through the firewall on tha passenger side, like I said it is a small black hose.

Anonymous

  • 8 Answers
  • Posted on Mar 12, 2009

SOURCE: fuse for the rear window defroster on the Dodge Neon

ok dude.... simpe questioneasy answer is 10. in the position#EIGHT

ghost45

PAUL MC G

  • 1280 Answers
  • Posted on Sep 07, 2009

SOURCE: heater/defrost control knob

Here's the wiring diagram of the manual AC controls. I suspect the problem is in the 'mode' switch/motor.

47fdc72.jpg

Anonymous

  • 41 Answers
  • Posted on Dec 14, 2009

SOURCE: Rear defroster doesn't work.

rear defrosters are an apllied film of semi metalic strips and if you get you windows tinted often the tint man accidentally nicks these strips cuasing the defroster to malfuction check for breaks in the srips

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1answer

2004 GMC Envoy has a banging knocking noise in the dash by defrost every time I start it. blower will not switch from defrost to floor or vents

Sounds like the diverter door is bound up causing the motor to bog down under load. You'll need a manual for that job. It's a pain in the rear to get to.
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Front heater blows cold air but the rear heater blows warm air

What about on defrost, do you get the proper temperature in the front, if you do it is probably a blend door issue controlled by the blend switch or knob.
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How do I locate the vacuum that moves my vents on my 2004 Ford Expedition

If you have the round style switch, sometimes the knob will crack and the shaft will not turn to the other positions. Since the Defrost is at the extreme end it may have cracked and now slips when you turn it the other way.
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My defroster on front windshield of my 2004 dodge neon does not work

If air does not come out of the defroster vents, but does from the floor and dash, it could be a blend door problem under the dash.
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Defrost not working

replace those controls
0helpful
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Defroster does not work

check the fuses and there maybe a relay also.
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Rear defroster doesn't work.

rear defrosters are an apllied film of semi metalic strips and if you get you windows tinted often the tint man accidentally nicks these strips cuasing the defroster to malfuction check for breaks in the srips
1helpful
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Fuse for the rear window defroster on the Dodge Neon

ok dude.... simpe questioneasy answer is 10. in the position#EIGHT
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