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NW Iowa | 4355 is your return line relay open.
- so you have a bad hose or relay not working correctly. This hose is part of a set your replace both suction and return.
4357 is pressure line relay open
-so you have a bad hose or relay not working correctly
Also check your wire harness where it plugs into your fuse module above the battery.
Seeing some wires getting worn through or pulled where they hump down out of the battery box. Agco will want to sell you the whole wire assembly, I've been getting the connector out of Italy.
Also if you have a mechanic that has probed the harness in the past, seen water get in and turn the wire green and short.
Also the wire connections that plug into those hoses can get bad
If it took your dealer that long they are meat heads.
Please tell me how they checked good....
Edited by Massey1155 5/9/2020 23:09
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MF 8650 DEF code
