Allow me to help in diagnosing your vehicle! If I helped make sure to hit ACCEPT button so as I can get credited. It sounds like the ABS is activating at times when the brake pedal feels different. Unfortunately the codes will have to be pulled from the ABS module to do a correct diagnosis. The most common concern with the Excursion is the rear speed sensor. I did find this TSB read it and see if it ressembles your
This article supersedes TSB 99-25-8 to update the vehicle model years.
Some 1999-2008 F-Super Duty, 2000-2005 Excursion, and 1997-2007 E-Series vehicles equipped with Hyrdo-Boost® brake booster system may exhibit a brake pedal kickback and/or grabbing condition when applying the brakes. This may be caused by contamination within the power steering system.
Filter the power steering fluid by installing a temporary filter in the power steering system. Refer to the Service Procedure below.
Eligible Under Provisions Of New Vehicle Limited Warranty CoverageIMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
Copyright © 2007 Ford Motor Company
It is a vacum boost system
Ok they came with either system on .
The computer will store codes even if the light is not on. So we will need to have the code pulled to do a proper diagnosis.
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