Torque CONVERTOR Engagement Test

Connect tachometer. Warm engine to normal operating temperature. Ensure transmission fluid level is correct. Maintain approximately 50 mph. Release throttle for about 2 seconds, then reapply to previous setting. Engine RPM should increase when throttle is released and decrease in about 5 seconds after throttle is reapplied. If torque converter clutch operation is not as specified, see TROUBLE SHOOTING in AUTO TRANS OVERHAUL - FORD 4R44E & 4R55E overhaul article.