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.

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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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2003 Eddie Bauer Ford Expedition 5.4l just made loud pop sound under hood and is now running very badly, Do you think the engine blew??

a spark plug may have stripped out and popped out of the cylinder head. Ford dealers are making lots of money fixing this common problem.

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Jun 01, 2010 | 1997 Ford Taurus

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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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Oct 12, 2009 | 1997 Ford Expedition

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Sep 22, 2009 | 2005 Ford Expedition

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