99 nav, 70mph vibration
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99 nav, 70mph vibration
I just got a 99 Nav. in Dec. I am still working out the "bugs". It is a 5.4 32valve, awd/4wd, air ride, 104000. I get a vibration in the seats @70-76 mph with a low frequency drone that gets madenning on long drives. I just replaced the pinion bearing to "fix" it, but it still has the problem? Could a flush of the transfer case help? any Ideas before they(dealer) get me for more money?
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