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Ford Expedition Noises

57 messages,  Last post on Oct 13, 2009 at 9:23 PM

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#55 of 57 Re: clunk when starting to back up [rpdrew] by ajenson May 24, 2009 (11:30 am)
Replying to: rpdrew (Oct 14, 2008 9:58 am) I'm wondering if you found what it is? Mine is now doing it.
#56 of 57 very unusaual rattling from my 04 Expy EB by pattym24 Jul 22, 2009 (7:57 am)
I've got an '04 Expedition with about 54k miles on it. Just last week, it began making a noise while traveling at highway speeds. After a couple hundred miles or so, this is what I've observed: The noise: has not occured below 55 mph has not occured above 80mph (don't usually drive above that) occurs both while towing a small trailer and with nothing in tow usually begins as a shift point is approached, but continues after the transmission completes the shift happens much more often while going uphill than when going downhill if allowed to "build", the noise will develop into an irregular thump that can be felt in the floor by both driver and front passenger ALWAYS goes away when I take my foot off the gas. Always. Never fails. NOW the last 2 days , nothing..?????   After the first two or three times I heard this noise I pulled off the highway and looked underneath, thinking I had picked up some road debris that was stuck underneath. Nothing there. I checked for loose heatshields - nothing. The thing I find really odd is that it always goes away as i let off the gas. I can get right back on the throttle and the noise is gone and everything is fine. there's no loss of power and other than the thumping I tried to describe above nothing feels different when it's making this noise. There's no check engine light and everything in the "system test" checks out OK.   I'm at a loss now, scouring the interwebs to see if I can dig anything up. Anyone have any ideas about this?
#57 of 57 Re: 2007 Expedition buzz/vibration 1500-1700 rpms [dakota123] by bman4138 Oct 13, 2009 (9:23 pm)
Replying to: dakota123 (Feb 26, 2009 7:46 am) I have 2006 Expedition 4x4 with intermitant virbation and buzz/ downshifting like sound at low rpm 1100 - 1500. No message on panel. Thought it was coil from other posts but mechanic could not find anything miss-firing. He said to bring back if it gets worse. I now think it is the transmission, only feel and hear at low rpm almost feels like it will stall at times.

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