Check that the capillary tube (expansion) is away from any heat source or touching anything hot. The capillary tube must be full of liquid refrigerant
Sounds like an evap issue as others have stated, although as Cad suggests pull the charge, i presume you've not been adding oil to it?
no codes at all, screen shows 00! I believe this is because the pretrip individually tests evaps one at a time so if zone 2 is in null and it is testing
Dirty or frosted evaporator?
Possible electrical issue, Evap fan intermittent fault/loose connection and cycling on and off, when off will lower the suction pressure, but possibly
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Re: Accumulator frosting and dropping suction pressure Caterpilar Machine
Check that the capillary tube (expansion) is away from any heat source or touching anything hot. The capillary tube must be full of liquid refrigerant
Glenn Moore 18-08-2018, 09:01 AM