Ford Mustang (1999-2004) Service Manual: Index Card
Place an index card or a piece of paper between the weatherstrip and the sealing surface, then close the door. Slowly withdraw the index card or paper after the door is closed and check the amount of pressure on the weatherstrip. There should be a medium amount of resistance as it is withdrawn.
Continue around the entire seal area. If there is little or no resistance, this indicates insufficient contact to form a good seal. At these points, the door, the glass, or the weatherstrip is out of alignment.

Tracing Powder
Tracing powder is used to check both the uniformity of contact and the
tension of a seal against its
sealing surface. These tests are usually done when a suspected air leak/noise
appears to originat ...
Noise, Vibration and Harshness (NVH) (Diagnosis and Testing)
Special Tool(s)
ChassisEAR
107-R2102 or equivalent
Electronic Vibration Analyzer
100-F027 (014-00344) or
equivalent
EngineEAR
107-R2100 or equivalent
...
Other materials:
Rear Drive Axle and Differential
The differential housing (4010) consists of a cast aluminum housing and
a cast aluminum
differential housing cover (4033). The differential housing cover uses
silicone sealant as a
gasket.
The hypoid-design gearset consists of a 8.8-inch ...
Removal
CAUTION: Electronic modules are sensitive to static electrical
charges. If exposed to
these charges, damage may result.
1. Remove the driver air bag module. For additional information,
refer to Section.
2. Remove the passenger air bag module. For ...
Road Test
Verify the customer concern by carrying out a road test on a smooth road. If
any vibrations are
apparent.
To maximize tire performance, inspect for signs of incorrect inflation and
uneven wear, which may
indicate a need for balancing, rotation, or front susp ...
