Econoline E450 V8-5.4L SOHC VIN L (1998)
6. install the upper intake manifold.
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Position the upper intake manifold gaskets.
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Position the upper intake manifold.
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Loosely install the nine bolts.
7. Connect the intake manifold tuning valve connector.
8. Install the water thermostat.
9. Tighten the bolts in two stages, in the sequence shown.
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Stage 1: 2 Nm (18 inch lbs.)
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Stage 2: 20-30 Nm (15-22 ft. lbs.)
10. Position the throttle body onto the upper intake manifold and install the bolts.
