Ford Mustang (1999-2004) Service Manual: 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 originate from the seal area or during the alignment and adjustment of a component to a weatherstrip. Tracing powder can be ordered from Crest Industries as ATR Leak Trace. Carry out the tracing powder test as follows:

a. Clean the weatherstrip.
b. Spray the tracing powder on the mating surface only.
c. Close the door completely. Do not slam the door.
d. Open the door. An imprint is made where the weatherstrip contacted the mating surface seal.
Gaps or a faint imprint will show where there is poor contact with the weatherstrip.

Vibrate Software
Vibrate Software (Rotunda tool number 215-00003) is a diagnostic aid which
will assist in pinpointing
the source of unacceptable vibrations. The engine's crankshaft is the point of
reference for vib ...
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 o ...
Other materials:
Pinpoint Tests
CAUTION: Before removing and installing the GEM or its connectors,
disconnect the battery. Failure to follow this caution will
result in the GEM storing many erroneous DTCs and
may result in the GEM exhibiting erratic operation after installation.
CAUTI ...
Inspection and Verification
1. Verify the customer's concern by operating the active restraint system to
duplicate the condition.
2. Inspect to determine if any of the following mechanical or electrical
concerns apply:
Visual Inspection Chart
Mechanical
Electrical
...
Introduction
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WARNING: Always drive wit ...
