Jetta V6-2.8L (BDF) (2002)
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Remove retaining frame on cylinder head for fuel lines and wiring harness -arrows-.
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Disconnect vacuum hoses -arrows- from intake manifold.
Note: Press buttons on hose couplings to do so.
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Remove rearmost bolt -1- for intake manifold support.
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Unclip pressure hose (between combi-valve and secondary air pump motor) and all other lines from retainers on intake manifold and cylinder head
cover.
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Remove guide on cover for coolant hoses and wiring harness.
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Remove Ground connection on support of combi-valve.
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Disconnect vacuum hose from variable intake manifold change-over vacuum actuator.
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Remove two lateral intake manifold support bolts.
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Remove center, left and right insulation trays
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Disconnect connectors from thermal switch and radiator fan.
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Removing front bumper:
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Bring lock carrier into service position, please refer to: Vehicle /Body and Frame /Radiator support/ Service and repair.
See: Body and Frame/Lock Carrier/Service and Repair/Procedures
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Unscrew dipstick guide tube from intake manifold.
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Remove intake manifold securing bolts and remove intake manifold together with throttle valve control module.
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Remove intake manifold and place on a suitable surface so that vacuum actuator is not damaged.
Note: Seal the intake ports in the intake manifold or in the cylinder head with a clean cloth.
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Remove cylinder head cover.
Installing
Install in reverse sequence; note the following points:
Note:
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Replace cylinder head cover if damaged or leaking.
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First bolt intake manifold to cylinder head. Then tighten both bolts of the manifold support.
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Ensure tight fit of fuel hoses.
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If necessary replenish coolant.
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Check DTC memory:
Refer to Powertrain Management
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Adapting engine control module to throttle valve control module
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Perform work sequence "Procedure after interrupting voltage supply"
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Read readiness code: