Exterior Wind Whistles; Road Test (Wind Whistles); Grille Area (Wind Whistles) - Jeep 1979 CJ-5 Technical & Service Manual

3A-10 WATER
LEAK/m
M § E » i » B g M l REPAIR
been corrected. Be prepared to make minor adjustments
or repairs on the road test.
Take the following tools and materials on the road
test:
• Stethoscope
• Body tape
® Weatherstrip adhesive
• Caulking cord
• Silicone Spray
• Screwdrivers
• Knife
• Small socket wrench set
With the above tools and materials, have an assistant
drive the vehicle to the test area. Make sure the test road
is dry and smooth as possible. It is difficult to hear wind
noise on wet, bumpy roads.
While the assistant drives the vehicle, move the ste-
thoscope slowly along the suspected problem area, and
listen for the point where the most noise is coming from.
Make sure to test the vehicle with the fresh air vents
open, because ram air pressure has an effect on the wind
noise level. Also, drive the vehicle in both directions on
the test road, as prevailing wind conditions could change
the noise level.
After determining where the most noise is coming
from, stop the road test and carefully inspect the prob-
lem area. If the cause is minor, repair it with the tools
and material taken along and retest the vehicle to find
out if the repair has worked.
( - - : - - ; - — ~ • -, ^
:
. ; ~ r P 7 T ^ ^ ^ ^ ^
Page
Body Mouldings 3A-11
Fender Mouldings 3 1 - 1 1
General 3A-10
GENERAL '
Noises generated by loose or unseated mouldings,
trim, vibrating grille components, etc., can be difficult
to diagnose. The most common noise is generally called a
"tea kettle" whistle and is usually due to air flowing,
under instead of around or over a moulding.
RIA1 TEST
There is no way to simulate the air flow that makes
exterior wind whistles, so a road test is usually neces-
sary. Take along a roll of body tape to help isolate the
problem areas when they are located on the road test. It
is usually helpful to have an assistant drive the vehicle
or locate the noise. Road test the vehicle with the front
windows up and then down, to be sure the noise is
coming from outside the vehicle. Also, drive the vehicle
in both directions, as the prevailing wind could influence
If in doubt that the problem area has been found,
cover the suspected area with body tape and continue
the road test. If the noise has been eliminated with the
body tape, the problem area has been located. However,
if the noise continues, apply additional strips of body
tape to other areas that may be causing the problem.
Continue road testing and applying or removing strips
of tape until the wind noise has been isolated.
Many wind noise problems can be satisfactorily re-
paired while on the road test. However, repair of some of
the problems, like aligning a window frame or adjusting
a door or window, may require returning to the shop for
completion.
DOOR ADJUSTMENTS
Refer to Chapter 3J for detailed procedures on door
adjustments.
LIFTGATE-TAILGATE ADJUSTMENTS
Refer to Chapter 3H for detailed procedures on lift-
gate-tailgate adjustments.
WINDOW ADJUSTMENTS
Refer to Chapter 3J and 3K for detailed procedures on
window adjustments.
- : ^ - t - W ^ — : ^ ^ ? - ^ 7 7 T ^ F ^
Page
Grille Area 3A-10
Luggage Racks 3A-11
Road Test 3A-10
the noise "level. Try to determine from which area of the
vehicle the wind whistle is coming:
• Grille area
• Hood bezel
• Fender mouldings
• Windshield reveal mouldings
•Luggage rack
When the source of the wind whistle has been found,
isolate that component by applying body tape to the
suspected area. Retest the temporary repair. If the body
tape stops the whistle, align and tighten the mould
ing/bezel or apply 3M Clear Auto Sealer or equivalent to
fill the gap that is causing the whistle.
GRILLE AREA
A process of elimination is the only system to use in
locating a wind whistle in the grille area. Make a wind