Downshift Speed Test

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

To carry out this test, proceed as follows:

Shift into a lower gear than the gear used when carrying out the Slow Acceleration Test.
Drive at the engine RPM where the concern occurs.
The concern is engine speed related if duplicated while carrying out this test. This eliminates the tires, wheels, brakes and the suspension components as sources.
If necessary, repeat this test using other gears and NEUTRAL to verify the results.
Proceed as necessary.