My left side was dropping about 4" after sitting for a few days (2004 4.4i sport). I installed new Arnott air bags specific to the sport package,....both sides are staying up now, but my left side is about 1/2" lower than the right. I checked both sensors when I had the wheels off and the plastic arms that connect the sensor arms to the suspension,...both seemed free with no binding.

Can the sensor arm positions be adjusted? (thinking I saw a clamp that could be loosened allowing the arms to be rotated about the shaft of the sensor).

BC