S40 L4-1.9L Turbo VIN 29 B4204T3 (2001)
Blow the hose clean in the direction of the crankcase ventilation.
Cleaning The Vacuum Hose
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Clean the vacuum hose nipple on the crankcase ventilation at the intake manifold.
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Remove the hose switch from the intake manifold.
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Disconnect the hose from the nipple. Disconnect the other end of the hose.
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Blow the hose clean using compressed air. If the hose is blocked, use a welding rod with a maximum diameter of 2.3 mm to clean it.
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Clean the nipple using a drill with a diameter of 3.2 mm.
NOTE: Check that the intake manifold is free of contaminants.