Neutral Coast Down Speed Test

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

To carry out this test, proceed as follows:

Drive at a higher rate of speed than where the concern occurred when carrying out the Slow Acceleration Test.
Place the transmission in NEUTRAL and coast down past the speed where the concern occurs.
The concern is vehicle speed-related if duplicated while carrying out this test. This eliminates the engine and the torque converter as sources.
If the concern was not duplicated while carrying out this test, carry out the DOWNSHIFT SPEED TEST to verify if the concern is engine speed related.
Proceed as necessary.