1999 Lincoln Navigator Ck Susp Light comes on when Towing T

1999 LINCOLN NAVIGATOR
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MUDDER1_2000
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Suspension problem
1999 Lincoln Navigator V8 Four Wheel Drive Automatic

My check suspension light keeps coming on when towing my travel trailer. 6000#. It doesn't come on when I am not towing my trailer. What could be causing the problem.
Jun 24, 2009 at 1:00 AM
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BLUECOLLAR
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Have the air springs ever been replaced? If not, that could be the problem altogether. Another possibility would be the compressor being weak and the system "timing-out". I would recommend doing a leak test first:
Jul 26, 2009 at 6:49 PM