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– Remove the connector -1- from the Oil Pressure Regulation Valve - N428- . Unclip the cable and route downward so that is not in the belt drive unit. With the connector removed the oil pump only pumps in the higher pressure stage. – Start the engine and check the oil pressure of the specified RPMs. • Oil pressure at idle: 0.85 to 4.0 bar (12.3 to 43 psi) Valve - N428- . Carefully route the cable. – Install the noise insulation. Refer to ⇒ Body Exterior; Rep. Gr. 66 ; Noise Insulation; Overview - Noise Insulation . – Check the engine control module Diagnostic Trouble Code (DTC) memory and erase any entries. Tightening Specifications ⇒ “4.2 Overview - Oil Pressure Switch/Oil Pressure Regulator . 4.6.2 Piston Spray Nozzles Oil Pressure, Checking Special tools and workshop equipment required fan must start up once). Test Sequence ⇒ “4.5 Oil Pressure Switch, Level 3 F447 , Removing and . – Install the Oil Pressure Gauge Kit - VAG1342- in place of the oil pressure switch. Note Risk of damaging the oil pressure tester. The hose from the oil pressure tester must not come in contact with the coolant pump toothed belt sprocket. |