1996 F-150, F-250, F-350, F-Super Duty, and Bronco Workshop Manual
DIAGNOSIS AND TESTING
Symptom Chart — Body Service
BODY SERVICE
Condition
Possible Source
Action
Dust Leak
Cowl trim panel, kick pads, and floor mats.
REMOVE trim. CHECK for leaks and SEAL with appropriate sealer. ROAD TEST for leaks. RECHECK trim for leaks, or USE light under vehicle with trim removed. CHECK interior of body at joints and weld lines.
Dust/Water Leaks at Floorpan and Grommets
Missing or damaged plugs and/or grommets.
CHECK plugs for proper installation.
Drain Holes Collecting Water
Holes clogged with mud or road tar.
CHECK drain holes regularly. CLEAN drain holes of dirt and foreign material with a punch or screwdriver.
Wind Noise, Air Entering Vehicle Through Small Holes in Body
Leaks at door and window seals or sheet metal joints in doors or door openings.
SEAL leaks with RTV sealant and foam tape. ROAD TEST. PINPOINT source of wind noise.
Rattles
Loose screws, nuts, bolts, small pieces of body deadener in door wells, pillars, and quarter panels.
CHECK doors by carefully striking underside of door with a mallet. LISTEN for loose objects in door. REPAIR. TIGHTEN body bolts and screws.
If tightening bolts and screws does not eliminate rattle, cause could be misalignment.
REFER to Section 01-03 for adjustment and alignment procedures.
Weatherstripping and anti-squeak material has slipped out of position.
APPLY additional cement or other adhesive. INSTALL in proper location to eliminate rattle.