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 There should be a medium amount of resistance as it is withdrawn.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:
Installation
1. CAUTION: Do not use metal scrapers, wire brushes, power abrasive
discs or other
abrasive means to clean the sealing surfaces. These tools cause scratches and
gouges
which make leak paths. Use a plastic scraping tool to remove all traces of old
sealant.
...
System Flushing - CIII Power Steering Pump
WARNING: Do not mix oil types. Any mixture or any unapproved oil can
lead to seal
deterioration and leaks. A leak can ultimately cause loss of fluid, which can
result in a loss of
power steering assist.
1. Remove the fuel pump fuse from the battery junction ...
Installation
1. Inspect the rear axle pinion flange seal journal for rust, nicks, and
scratches prior to installing
the flange. Polish the seal journal with fine crocus cloth, if necessary.
2. Lubricate the rear axle pinion flange splines.
Use SAE 75W-140 High Performa ...
