Question about 1998 Ford Explorer

1 Answer

AC/heater vent only blow out hot air

The AC went out last winter. It started when I accelerated it seemed to cut out ( like on any dodge vehicle, when you accelerate to pass or are going up hill the ac cuts out ). It never did it before so I don't think it's a power issue. Also It didn't actually cut completely out. The air just stopped coming out of the front facing vents and only came out of the defogger/defrost vents. Until the cold air would only come out of the defog vents all the time. Then eventually the air started coming out hot all the time last winter. During the winter I didn't mind but It's summer ( in Arizona no less ) now. The weird thing is a couple of weeks back it started blowing cold air on its own. I didn't do anything to it. I thought the air coming out of the defog vents only and the controls not doing anything but switching on or off, might be a switch so I replaced all ( the fan switch on the left and the ac/heater switch on the right) except the one in the middle that switches the temp from hot to cold because it was not available in store. Can someone help me? I don't want to pay thousands to fix it, my 98 explorer sport isn't even worth that.

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  • shadoboy93 Jul 04, 2009

    It was the blend door. Now how do I fix that. I don't want to pay $600 to someone who's fixing something that will take less than an hour and $50 in parts to fix.

  • shadoboy93 Jul 10, 2009

    The pipes are cold. The plastic under the dash is cold. The air coming from the vents is hot. I manually opened the blend door so now I have cold air and rigged it so the air comes out of the front facing vents. But I have not addressed the vacuum issue.

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  • Ford Master
  • 1,348 Answers

That switch controls a vacuum operated door that lets a/c or heat thru.when accelerating,the vacuum in the engine changes so it sound like a vacuum issue.take apart the center stack and there is a vacuum actuator in there connected to the flap door .i have seen those have issues with the metal tab broken away from the plastic that moves it.is the a/c piping cold under the hood where it goes into the heater a/c assembly?the compressor should be cycling on and off and the pressure tested.

Posted on Jul 03, 2009

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Posted on Jan 02, 2017

autodr
  • 260 Answers

SOURCE: Bad rear defog switch

the only place to get another switch is the dealer or the junkyard. why are you changing switch? there is a service bulletin on poss. problems with the defrost grid in rear window. bulletin number is 04-08-48-001b call dealer for details

Posted on Nov 23, 2008

  • 1 Answer

SOURCE: Radio cuts out when rear window defogger is turned on(05' Altima)

I have the same problem in my 2003 Altima. I had a friend who works on cars check it out. I watched him and when he removed the panel under the steering wheel next to the driver's door you could hear a clicking noise. He said is sounds like my defogger relay/switch is bad. I located the part and it is not that expensive. I am going to purchase the part and have it put on. I will keep you posted to let you know if it solves my problem. If it does I will give you the name of the part so you can hopefully solve your issue.

Posted on Mar 23, 2009

jeffbvegas1
  • 520 Answers

SOURCE: 1999 rear defogger switch lights up but window

Any open spot in the grid on the glass will cause no heat. Ck for voltage at the connector with a test light and trace through grid for open. Permatex 15067 Quick Grid Rear Window Defogger Repair Kit may help if you can find it

Posted on Aug 16, 2009

  • 3640 Answers

SOURCE: rear window defogger does not function, fuse good,

check the defog switch it might be bad.the light will not be lit if the switch is bad.

Posted on Oct 05, 2009

  • 1 Answer

SOURCE: Rear window defogger doesn't work.

Either your control module is burned out or your window contacts have become detached. Permatex offers an electrically conductive adhesive for the latter (less than $10). For the module, it's a combo radio antenna and defrost control. It's located on passenger side in back at the pillar. You have to take off the fabric panel to get to it.

Posted on Mar 27, 2010

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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:----

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

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

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

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

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

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

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