Question about 2006 Ford Explorer Sport Trac

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2006 Ford explorer/No heat /overheating

Hello, My wife's explorer has stopped blowing hot air when the engine is warmed up and in idle. it just blows cold air/ when I start driving it one of 2 things happen, it will start blowing hot air or it starts to overheat almost instantly, the gauge shoots up. sometimes if I turn the the blower off and on the heat kicks back in (blower works fine it blows cold air when the heat is on when this happens I know to start watching the temp gauge) and temp goes down. 2 times it has worked fine but when I was getting on a on ramp on the autobanh (highway) (right turn) the heat will stop blowing on cold air comes out and over heats again. I pull of to the side and it starts to work again heat blows out temp goes down. I am soldier stationed in Germany and before I get taken to the cleaners at the German ford dealer I would like to have clue whats going I tried explaining it to the German Master Mechanic at Ford and all he kept saying was ya ya heat problem you bring car we fix, any help would greatly be appreciated thanks in advance SSG Leon

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  • Anonymous Jan 02, 2009

    I have the same problem with my 2005 Explorer. The engine heats up but I only get cold air until I start driving. I am taking it to dealership next week. I will let you know.

  • twernet Jan 29, 2009

    I am experiencing the same problem. Did either of you find a resolution? Mine just went out of warranty so I really don't want to get taken to the cleaners if I can avoid it.

  • Anonymous Feb 03, 2009

    my 06 explorer only heats up when driving not in idle.

  • Tnypeachez Mar 02, 2009

    try adjusting the idle. I have the same vehicle, same problem. yet, if while sitting in park, you give it a little gas up to about 1 1/2 to 2 rpm, you get heat. Therefore I believe it is an idle problem

  • rodcogroup May 07, 2009

    On several occasions I am driving and the car loses power (even though the engine revs high). The temp gauge shoots up and overheat light comes on.
    I shut off the engine, wait a bit and its fine again.

  • jspanky0723
    jspanky0723 Jan 05, 2013

    im having this same problem on my 2006 explorer. does any of yal ever find out wat it was, mine is still under waranty but i take it up there and they say nothing is wrong wit it. if u could email me at thanks

  • jspanky0723
    jspanky0723 Jan 05, 2013

    im having the same problem out of my 2006 explorer, did any of yal figure out what it was. mine is still under waranty but they say nothing is wrong with it, if someone can email me at and let me know. thanks



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Sounds like you are either low on coolant, or a head gasket failure.

Posted on Jan 06, 2009

  • James Bustamante Oct 14, 2010

    Check the vacuum line on the top heater core hose ( under hood passenger side) you will see a 3/4 in hose with a small valve on it with a vacuum hose will fall off sometimes

  • kgb951 Aug 05, 2011

    I had a similar problem and it was a cracked thermastat housing. Temp gauge went and up and down... heat and no heat. Steam coming near the middle of the firewall.


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Or it could be a faulty heater core, water pump, thermostat. pretty much anything in the cooling and heating system pretty much come into play.

Posted on Mar 10, 2009

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You need to replace the head gaskets.

Posted on Oct 11, 2012

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We are having the same issue! We are stationed in England and we have spent about 6,000 USD to "fix it" and still it's not fixed. Also the air conditioner can not be run suring the summer. The car overheats every time! If I am driving slow, I can run the air. (20MPH or less) But if we get on the motorway I can't run the air. The blower is working fine. But my heat just went out 3 days ago and just blows cold air... I really just wanna wrap this car around a pole an be done with it!!

Posted on Oct 28, 2011

  • jspanky0723
    jspanky0723 Jan 05, 2013

    have u found out wat the problem was


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The heads are warped beyond their max. limit... the combustion gases are entering the collant passages and blocking coolant flow until the rpm increase this in turn overcomes that and coolant flows. There is a test to verify this and is fairly cheap to have your mechanic do (combustion leak test ) its a plastic container with some chemicals in it, you hold it over the radiator cap (removed ) while running at it detects HC`s in the coolant "Outta"

Posted on Apr 03, 2010

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To troubleshoot this types of problem,click the link below :----
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