allandwf
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I would get that one checked, could be sender, or the gauge. Hopefully not reading 2.5 Bar high over the complete range as that would mean zero pressure at idle, but I'm sure that would have manifested itself by now if true :/Bummer. Mine gives 2.5 with the key just turned to light up the dash but then behaves itself after the engine is on giving 5bar on load and dropping bk to 2.5 at idle.
Defo should not do this then? Not just reading residual presure in the system?