F 150 4WD V8-5.4L Flex Fuel (2008)
24. Disconnect the LH and RH knock sensor (KS) electrical connectors.
25. Remove the nut and disconnect the engine wiring harness retainer from the CMCV stud.
26. Disconnect the RH heated exhaust gas oxygen sensor (HO2S) electrical connector and detach the electrical connector retainer.
27. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These
tools cause scratches and gouges which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
Remove the intake manifold and discard the gaskets.
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Clean and inspect the sealing surfaces with silicone gasket remover and metal surface prep. Follow the directions on the packaging.
Installation
1. NOTE: Electrical and vacuum harnesses must not restrict movement of the CMCV control rods at the rear of the intake manifold. Use extreme
care on installation of the intake manifold to prevent any pinching of electrical and vacuum harnesses.
Using new intake manifold gaskets, position the intake manifold.
2. Using new gaskets, position the coolant crossover and install the 3 bolts.
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Tighten to 10 Nm (89 lb-in).
3. Install the intake manifold bolts and tighten in 2 stages in the sequence shown.
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Stage 1: Tighten to 2 Nm (18 lb-in).
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Stage 2: Tighten to 10 Nm (89 lb-in).
