Body/Frame - Windnoise Identification and Correction
Article No. 85-8-17WIND NOISE - IDENTIFICATION AND CORRECTION
LIGHT TRUCK 1984-85 ECONOLINE, RANGER, BRONCO II, F-SERIES LIGHT TRUCK AND BRONCO
Air entering or exiting the truck through small openings in the body can result in wind noise. Sources of wind noise are detected by driving highway speed in four different directions. Listen for sources of wind noise with all windows closed, radio off, heater and air conditioner blower motor turned off and ventilation ducts closed. With the blower motor set on the lowest speed or with the ventilation ducts open, again listen for sources of wind noise. A stethoscope can be used to pinpoint the source of the noise.
Most wind noise producing leaks will occur at the door and window seals or at sheet metal joints in the door or the door opening in the body.
Seal all leaks with RTV sealant and foam tape or by repositioning or replacing the seals. Road test the truck to make sure all leaks have been adequately sealed.
An alternate method of verifying corrective actions involves the use of an ultrasonic leak detector such as the Rotunda Model 029-00001. After identifying the leak point through a drive evaluation, obtain a meter reading via the leak detector. A re-check with the leak detector after repairing the leak will verify the effectiveness of the corrective action. A final verification drive may still be advisable to assure that other objectionable leaks, masked by the predominant problem, do not exist.
SPECIFIC CONCERNS The following are specific wind noise concerns that were found on early production vehicles. For your convenience, the concerns are separated into groups and truck lines. Each group will contain the Location and Correction of a specific wind noise concern.
Group I - Primary Weatherstrips
^ Econoline
Group II - Vent Windows
^ Econoline
^ Ranger/Bronco II
^ F-Series/Bronco
Group III - Flocked Runs
^ Econoline
^ Ranger/Bronco II
^ F-Series/Bronco
Group IV - Miscellaneous
^ Econoline
^ Ranger/Bronco II
^ F-Series/Bronco
GROUP I
PRIMARY WEATHERSTRIPS ECONOLINE
Concern - Wind noise at nose of front door.
Figure 14 - Cowl Side Joint:
Correction - Apply a smooth bead of clear silicone rubber adhesive at "A" pillar to cowl side joint as shown in Figure 14.
NOTE: Also inspect primary weatherstrips to make sure vent holes in weatherstrip are facing inboard. If vent holes are located on the outboard side of weatherstrip replace with new design. Part No. E4UZ-1520530-A R.H., E4UZ-1520531-A L.H.
Figure 15 - Front and Rear Header Joints:
Concern - Wind noise at corners of sliding side door.
Correction - Apply a smooth bead of clear silicone rubber adhesive at front and rear header joints as shown in Figure 15.
NOTE: Also inspect the weatherstrip and determine if it is damaged, distorted, or misaligned. Repair, replace, or align the weatherstrip as required.
GROUP II VENT WINDOWS
ECONOLINE - RANGER/BRONCO II F/SERIES/BRONCO
Concern - Wind noise at top and bottom of division bar.
Figure 16 - Division Bar:
Correction - Apply a smooth bead of black silicone rubber adhesive at top and bottom of division bar. (Inside and outside as shown in Figure 16).
Concern - Wind noise at lower rear corner of vent glass.
Figure 17 - Vent Frame:
Correction - Apply black body-caulk in gap between glass and vent frame as shown in Figure 17.
Figure 18 - Door Inner Panel:
ECONOLINE
Concern - Wind noise at vent glass to seal. Correction - Check for vent window frame distortion by removing the lower division bar attaching screw. If division bar moves, elongate attaching hole in door inner panel to allow distortion free attachment of division bar as shown in Figure 18.
RANGER/BRONCO II
Concern - Wind noise at nose of vent window weatherstrip to door sheet metal.
Figure 19 - Vent Window Weatherstrip:
Correction - Apply clear silicone rubber adhesive under lip of vent window weatherstrip to door sheet metal as shown in Figure 19.
GROUP III FLOCKED RUNS ECONOLINE
Concern - Wind noise at flocked run joint at top of division bar.
Figure 20 - Flocked Run:
Correction - Pull corner of flocked run out of door frame and apply foam tape to inside and outside of flocked run as shown in Figure 20.
RANGER/BRONCO II - F-SERIES/BRONCO Concern -The door glass pushes the flocked run into the door frame at upper rear corner resulting in a wind noise.
Figure 21 - Flocked Run:
Correction - Pull rear corner of flocked run out of door frame and apply foam tape behind flocked run as shown in Figure 21.
GROUP IV MISCELLANEOUS
ECONOLINE - RANGER/BRONCO II F-SERIES/BRONCO
Concern - Wind noise around windshield due to sealer skips.
Figure 22 - Sealer Skips:
Correction - Inspect for sealer skips around entire windshield and apply black silicone rubber adhesive as necessary. Figure 22.
Concern - Wind noise at ball stud hole in mirror shell.
Figure 23 - Ball Stud Hole:
Correction - Apply clear silicone rubber adhesive to fill gap between mirror outer shell and plastic liner at ball stud hole as shown in Figure 23.
RANGER/BRONCO II
Concern - Wind noise at seat belt slot in floor pan below "B" pillar.
Figure 24 - Rubber Plug:
Correction - Check for missing rubber plug in floor pan below "B" pillar and replace if necessary. Part No. 385622-S, see Figure 24.
Concern - Wind noise at "A" pillar to roof joint.
Figure 25 - Sealer Skips:
Correction - Apply clear silicone rubber adhesive at sealer skips as shown in Figure 25.
ECONOLINE
Concern - Inner belt weatherstrip leaks causing wind noise.
Figure 26:
Correction - Install new design inner belt weatherstrip Part No. E4UZ-1521456-A R.H., E4UZ-1521457- A L.H., as shown in Figure 26.
PART NUMBER PART NAME CLASS
E4AZ-19627-A 1/8" x 3/4" Foam Type B
E4AZ-19627-B 1/4" x 3/4" Foam Type B
D6AZ-19562-A Clear Silicone A
Rubber Adhesive
D6AZ-19562-B Black Silicone AG
Rubber Adhesive
3M-08578 Black Body Caulking Procure
Locally
E4UZ-1520530-A Primary Weatherstrip A
E-Series
E4UZ-1520531 -A Primary Weatherstrip A
E-Series
E4UZ-1521456-A Inner Belt Weatherstrip B
E-Series
E4UZ-1521457-A Inner Belt Weatherstrip B
E-Series
385622-S Rubber Plug S
Ranger/Bronco II
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: "INFORMATION ONLY"