TC feedback intermittent stuck brake onfront DT car. ~~~~~ TC feedback intermittent stuck brake on     #3631 FC 327 Multiple time,323 multiple. #3631 tacho 4 found resistance fluctuating.Check tacho 4 cable continuity ok.Replace tacho 4 check resistance ok.No fluctuation depot shunting ok.No BCU fault or stuck brake. Tacho Gen:- Old: 1504465 New: 1249239 Not: 2410774 Done by Zulq/Haslan. 22/08/22