You should typically pay between $400 and $600 to replace the compressor on a 2003 Lincoln Navigator. Where the repairs are completed and the type of compressor play a large part in the actual cost.
You should be able to hear the compressor Overtime the compressor will get noticeably louder. This doesn't necessarily mean that it's failing or should you be alarmed. If you are concerned I would suggest that you take it in and get it checked out.
Sealant does not work. Replace faulty seal or gasket.
Your local Lincoln dealer should Have it.
According to the 2008 Lincoln Navigator Owner Guide : " regular " unleaded , 87 octane
http://www.autopartsource.com/catalog/7704.pdf I found a link with directions on how to replace the cabin filter on a Lincoln Navigator. It states it should take approximately 15 minutes to do the job. Pages 49-50 of this pdf file give directions along with drawings on replacing the filter for models 1998-2005 of the Lincoln Navigator.
5000.00
the compressor should be under the hood on the front passenger side, it should be.
quite possibly the A/C compressor clutch. The whining should decrease when the A/C is turned off. You will still hear some of the noise due to the clutch turning while the engine is on.
my 98 navigator service guide said 8000km. hope that helps
According to the 1998 Lincoln Navigator Owner Guide : ( " regular " unleaded gasoline , 87 octane )
Can't post a picture but, the air suspension compressor relay should be found close to the passenger side front headlight.
According to the 2005 Lincoln Navigator Owner Guide : With engine oil filter change : ( 7.0 U.S. quarts / 6.6 liters of 5W-20 )