Robert C Fredericksburg , VA July 17, 2015 Appliance: Whirlpool Washer WTW57ESVW0 Whirlpool Washer Wtw57esvw0: Washer did not cycle properly began to agitate before filling and also added water at end of spin. How to replace Washer Timer Control. Replaced timer and sensor switch. It may not have needed both the timer and sensor switch but based on Q and A on the APP website I replaced both parts which corrected the malfunction. The parts were delivered the day after being ordered. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes