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 There should be a medium amount of resistance as it is withdrawn.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:
Sensor - Front
Removal
1. Remove the wheel and tire assembly.
2. Remove the inner fender splash shield.
1. Remove the inner fender splash shield push pins.
2. Remove the inner fender splash shield screw.
3. Remove the inner fender splash shield.
3. Remove the front ...
Vibration When Brakes are Applied
For vibration concerns when brakes are applied, perform the following
procedure.
Visually inspect:
tire condition and pressure.
suspension bushings and ball joints.
Correct as necessary.
1. Verify and isolate the concern. Brake roughness can be felt in: ...
Symptom Chart
Condition
Possible Sources
Action
Incorrect/erratic direction
of airflow from outlet(s)
No vacuum to A/C heater
function switch selector.
A/C heater function selector
switch leaks vacuum.
Kinked/pinched vacuu ...
