If you want to disable this 'feature' just disconnect the plug from the solenoid valve with the green vacuum lines connected to it.

This will cause a fault code to register in the engine management ECU as it checks to see if the solenoid is connected, but it shouldn't have any other effects.

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Mick J
'08 Chrysler 300CRD (MB OM 642 engine)
'95 E220 estate
'89 230TE (R.I.P.)