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Truck bouncing up and down

(1999 Lincoln Navigator)
in Sacramento, CA on June 27, 2011
AFTER REPLACING BOTH AIR SPRINGS,THE TRUCK WAS FINE FOR A WHILE NOW IT BOUNCES LIKE A BENT WHEEL OR SOMTHING..THE FASTER YOU GO THE LESS BOUNCE YOU RECEIVE..THE REAREND IS NOT SAGGING.PLEASE LET ME KNOW IF YOU HAVE ANY IDEAS..THANK YOU.
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Popular Answer
on June 28, 2011
The thing I'm concerned about: the air springs could possibly be overfilled due to an air venting problem with the compressor. Too much air will cause excessive bouncing and harsh ride. A diagnosis needs to be performed to command the system operate its various functions and see if something is failing.
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on June 27, 2011
It is possible the tires are bad, they may cause more of a bounce or vibration at certain speeds. If you replaced the air bags in the suspension but not the shocks, then you would be experiencing this type of bounce. The shocks sound like they are worn out, but will not necessarily display any vehicle sagging.
For a vehicle inspection, stop by www.sacPrestigeAutoWorks.com
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