Posts: 23
Threads: 6
Joined: Jan 2022
Hello all, anyone know why my autofill keeps filling when TCS says its off? Thanks
Jeff and Emily Full timer lineman
2006 45’ #764 Cat C15 625
Vacaville California
Posts: 5,949
Threads: 267
Joined: Jul 2012
Sensor could be fouled. Does tank level indicate full?
Grit in the diaphragm valve has caused this to happen to others with auto fill.
Type “auto fill AND valve” into the search engine and there a handful of posts on this topic. The AND must be in all caps.
Richard and Rhonda Entrekin
95 Newell, 390 Ex caretaker
99 Newell, 512 Ex caretaker
07 Prevost Marathon, 1025
Maverick Hybrid Toad
Inverness, FL (when we're home

)
(This post was last modified: 01-25-2022, 12:05 PM by
Richard.)
Posts: 23
Threads: 6
Joined: Jan 2022
Thank you Richard, I believe it is the autofill diaphragm. I’ll take the valve apart and clean it.
Jeff and Emily Full timer lineman
2006 45’ #764 Cat C15 625
Vacaville California
Posts: 5,853
Threads: 500
Joined: Jul 2012
usually a simple fix if you can get at the valve easily
tom
2014 Haulmark 40' Super C on Freightliner Cascadia ISX15 Easton 13 speed
Former Owner 1990 38' Newell Coach 236 8V92
Former Owner 1999 45'8" Newell Coach 526 Series 60
Former Owner 2002 45'8" Newell Coach 608 Series 60