Torque CONVERTOR Engagement Test
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Lincoln Navigator, 2002 Ford Expedition, 2001 Lincoln Navigator, 2001 Ford RV Cutaway, and 2001 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Connect tachometer to engine. Ensure engine and transmission are at normal operating temperature. Drive vehicle at about 50 MPH in "D" position (overdrive on). After normal operating temperature has been reached, maintain a constant speed of about 50 MPH and tap brake pedal lightly. Engine RPM should increase when brake pedal is tapped (TCC disengages). Engine RPM should decrease in about 5 seconds (TCC engages). Slow to a stop. If TCC does not engage during road test or is engaged continuously (causing engine to stall at stops), see appropriate symptom in appropriate SYMPTOM DIAGNOSIS under TROUBLE SHOOTING .