Possible bad front end part.
On a 2000 Lincoln Navigator : The switch for turning OFF the air suspension compressor is located in the front passenger footwell , by the kick panel
If you operate a front wheel drive vehicle, the clunking noise you hear may be a CV joint bearing going bad.
The 2007 Lincoln Navigator has 63.3 in. of front shoulder room.
The 2005 Lincoln Navigator has 63.3 in. of front shoulder room.
The 2006 Lincoln Navigator has 39.6 in. of front head room.
The 2014 Lincoln Navigator has 41.1 in. of front leg room.
The 2012 Lincoln Navigator has 63.3 in. of front shoulder room.
The 2012 Lincoln Navigator has 60.2 in. of front hip room.
The 2004 Lincoln Navigator has 41.1 in. of front leg room.
The 2013 Lincoln Navigator has 63.3 in. of front shoulder room.
The 2006 Lincoln Navigator has 63.3 in. of front shoulder room.
The 2001 Lincoln Navigator has 42.8 in. of front leg room.