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Ford Expedition Noises

57 messages, Last post on Oct 13, 2009 at 9:23 PM
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1999 Expedition 4WD I have a loud mechanical popping noise from the front of the car under acceleration. It does it in AWD or 4WD HI. If I remove the fuse for the 4 WD, it won't do it at all. If I am in a turn it won't do it until I straighten up. It will do it with the cruise set at anything up to 70 mph but if you set the cruise to anything over 70 it won't do it. I haven't found any information on whether or not the traction control is disabled above a certain speed. I have changed the speed sensor on the rear differential but have not changed the ones on the front because of the cost. Has anyone had a similar problem and if so what was the remedy? |
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| Hi my name is Nelson i own a 99 expo. i have a bang when ever i hit a bump the noise is coming from the left rear, i have changed the shocks myself thinking that, that might be the problem, its still there can any one tell where the noise is coming from. | |
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Replying to: rpdrew (Oct 14, 2008 9:58 am) |
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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? |
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Replying to: dakota123 (Feb 26, 2009 7:46 am) |
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