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2004 Ford Freestar Question: Check engine light on, vehicle running rough when idling.

 

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sunflower, Ventura, CA, April 08, 2009, 09:51
 Rookie

The check engine light came on while driving and the van started running rough, ie revs fluctuating from around 600 rmps to 1200 while idling and it will stall if revs are not increased by keeping foot on gas. When up to speed, it seems to run fine. Just had a tune up done a few months ago, new spark plugs etc. It does have almost 125,000 kilometers on it. Any idea what the problem might be?

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  • Answer #1

    munkyrench April 08, 2009, 17:12
     Master

    Do you know what codes are stored in the engine control module? With that information, you can really get a better answer.

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  • Answer #2

    nonissuebs November 03, 2009, 19:30
     Rookie

    You really need to go to town hall on edmunds.com and look up 2004 Ford Freestar engine problems and be amazed. We need a recall.

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  • Answer #3

    Visitor, March 18, 2010, 01:40

    its your ignition switch

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  • Answer #4

    Visitor, July 14, 2010, 14:00

    04-07 FREESTARS HAVE A TSB # 05-23-7 WATER LEAKS ON THE PCM CAUSING DIVABILITY PROBLEMS IF YOU HAVE MORE THAN ONE CODE YOU SHOULD CHECK THIS FIRST

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  • Answer #5

    Visitor, August 23, 2010, 06:48

    Mine started that about 2 weeks ago, Just took it to Good Year and put on Analyzer. My PCV Tube Sensor is Leaking air..Manufacture part so I have to order it...

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  • Medium-star Best Answer
    Visitor, October 05, 2010, 08:04

    Just had the same issue with our 2004 Freestar. The failure is a rubber vacuume hose elbow that enters the upper intake manifold. The hose elbow connects to a longer formed plastic hose that runs over to the front valve cover and connects to the PVC valve in the valve cover. The rubber elbow had a hole in it allowing for a vacuume leak. Engine runs okay at speed but is very rough at idle.

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    Visitor, November 18, 2010, 20:26

    Did you find the elbow part number? What was the price?

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    stwoodworth, November 18, 2010, 20:30
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     Rookie

    Ditto

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    Visitor, December 01, 2010, 05:44

    I had that problem with my freestar, goodyear fixed the pump for about 65 bucks, but not even a month later the lights back on, now they are saying I need two parts and it'll be about 1500. On top of that they said my alignment is off and causing my front two tires to ball (of course now making my tires not covered with the warranty, I just got new tires less than a year ago with them) and that's another 800.

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  • Answer #7

    jerry12 January 01, 2011, 14:17
     Rookie

    I had a similar problem and am very happy to say the fix was the rubber elbow on the PCV line at the intake manifold. Just fixed it today and have a smooth idle.

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  • Answer #8

    Visitor, April 14, 2011, 13:14

    crank sencor is bad

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  • Answer #9

    Visitor, May 02, 2011, 21:00

    I had the same issue and it is a defect hose. This was also mentioend in some of the previous replies.
    The Ford spare part # is 3F2Z-6758-DA. This part can be installed easily.

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    marinepres, April 10, 2012, 09:33
     Rookie

    Same issue, same mileage. What the hE@$? Did they build this part to fail or what. Just glad it was a cheap fix.

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