99 Expedition - weird vibration
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Joined: Jul 2004
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99 Expedition - weird vibration
Hello,
This is probably going to be impossible to diagnose, but what the heck...
My 99 EB Expedition with 130,000 miles, no trailer package makes a weird vibration when the drive train is unloaded. It always happens unexpectedly and I can never duplicate it. It happens most often when I'm driving on a level road around 70 mph. I'll let off the gas, then there it goes. A vibration that last about a second and feels just like I'm running over a grooved surface. The sound/vibration is felt throughout the car. I can't tell if it's the transmission, rear-end, whatever. Any ideas?
Thanks
This is probably going to be impossible to diagnose, but what the heck...
My 99 EB Expedition with 130,000 miles, no trailer package makes a weird vibration when the drive train is unloaded. It always happens unexpectedly and I can never duplicate it. It happens most often when I'm driving on a level road around 70 mph. I'll let off the gas, then there it goes. A vibration that last about a second and feels just like I'm running over a grooved surface. The sound/vibration is felt throughout the car. I can't tell if it's the transmission, rear-end, whatever. Any ideas?
Thanks
Senior User
Joined: Feb 2003
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From: Jersey Shore on the Right
My son's 98 Pathfinder had similar symptoms in addition to a low speed clunk on bumps and brake vibration stopping from highway speeds. The clunk was a broken front sway bar link, repaired, and the brake vibration was warped rotors, replaced those. They also found a loose front wheel bearing and tightened the nut. All symptoms are gone now. I drove his truck before repairs and felt the same intermittent vibration you describe; very infrequent, lasts less than a second, not triggered by anything I could ID, and felt just like the grooves they cut in highway shoulders to warn you that you're heading off-road.
To add another story - other son's 02 Ranger suddenly develops a serious vibration when moving forward. Dealer says left front wheel bearing. No warning, no noise, just starting vibrating. Covered under drive train warranty so I did not argue but it went like no other wheel bearing I've experienced.
To add another story - other son's 02 Ranger suddenly develops a serious vibration when moving forward. Dealer says left front wheel bearing. No warning, no noise, just starting vibrating. Covered under drive train warranty so I did not argue but it went like no other wheel bearing I've experienced.
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Joined: Jan 2009
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I have the same problem on my 2000 Navi. I runs fine, up until I reach about 70 mph. Suddenly the vehicle starts to hum and upon releasing the pedal, it begins to vibrate as if I am running over horizontal groves cut into the highway. I noticed that my rear axle seals are leaking and a mechanic friend of mine suggested that I replace the rear bearings. Have you had any luck resolving this same problem with your vehicle?
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Jigger2020
Explorer, Sport Trac, Mountaineer & Aviator
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May 4, 2013 09:50 PM
89LX306
1997 - 2006 Expedition & Navigator
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Feb 8, 2011 08:11 PM
46, 99, bearings, drivetrain, expedition, ford, front, intermittent, remove, speeds, vibrate, vibrates, vibration, wheel, wheels
