Question about 1999 Ford Expedition

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Pop! flap flap flap!! mystrerious

I have an 97 ford expedition. i have it for 6 years now and it runs great. but the other day i was driving i heard this pop sounf as if something blew off from being underpressure. i didnt see no visable signs of damage and the truck run normal as usual up until a drive and a hour later. i started hearing this flaping sound like the tuck was rolling on a flat tire or a flag whipping in the wind. once again i pulled over and checked every where trying to see whats wrong. it only made that sound when i was driving which made me believe it was something with the tires didnt see a thing. the truck still ran fine and that sound went away shortly. now this pop and flap sound happened once before about a year after i bought it, only that time it pop and flap flap all at once. so obviously what ever it is cant be critical cause 5 years later it still running strong. i just wonder what is that

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  • bigant062019 Apr 08, 2009

    how to replace the door mirror the whole housing on 97 expedition

  • gerry bissi May 11, 2010

    metallic sound? check to see if the plastic wheel liners are loose first. need more info.

  • HomeTime May 11, 2010

    it could of been the air pump did you here it from the right front under the hood?



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I had the same sound that you mentioned. I found it to be the roof rack sliding backwards. Tightened it and the noise went away. Occasionally, it will make the same noise, depending on the wind, but I have always found it to be stopped by tightening the roof rack. Hope this helps.

Posted on May 14, 2009


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2000 Expedition is idling badly and stalling.

Have you changed your fuel filter? When is the last time you changed your sparkplugs? Have you had any codes on the computer? Heres what I would do. First change your sparkplugs. This is a 4-6 hour job. You have to unbolt the cop(coil on plug assembly). After you change the plugs your truck will run rough. Drive it around the block then back to your house. It will take 3-5 restarts before your truck quits running rough. Reason for this is because your computer is trying to "relearn" the firing order. I have done this several times so i know what i am talking about. You can even look it up. Your 2000 expedition is a dang good truck with a great engine. After your computer relearns the firing order then the rough idle will be gone. Then I would take it out on the freeway and run it hard for 5-10 miles. If you experience a miss or two then that means you need a new cop(s). Get a code reader and it will tell you which cop is bad. Cops are expensive. I bought 6 new ones on ebay for $40. If you buy from autozone or ford dealer then you are looking at about 80-100 bucks a piece. Tell me if this helps. Ford makes a good truck and the expedition is a great truck. Mine is a 2000 expedition also. I have 248,000 miles on it and running strong with no burning oil. Good luck.

Apr 15, 2015 | 2000 Ford Expedition

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I have 97 expedition, running good except for coming to an Idle, gets shaky like its out of fuel, has died on me several times coming to a stop. Other than that it runs great accelerats great ?

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Aug 22, 2011 | 1997 Ford Expedition

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Mar 09, 2010 | 1997 Ford Expedition

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Possible solution..Expedition uses a vacuum solenoid on the firewall that controls vacuum to the 4-wheel drive actuator. Vacuum "unlocks" the 4-wheel drive, so you may have a leak in the line to the actuator so the 4-wheel drive is always on. Seems backwards, I know.

Dec 07, 2009 | 1997 Ford Expedition

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