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1. Remove the upper and lower intake manifolds. 2. Remove the coolant crossover tube. 3. Unplug the electrical connector, then remove the sensor retaining bolt and the sensor from the block. 4. Install the new sensor tightening the retaining bolt to 18-25 ft-lbs and reconnect the electrical connector. 5. Reinstall the crossover tube. Use a new gasket and RTV sealant between the thermostat housing and the crossover tube flange, and use a bead of RTV sealant where the bottom water passage of the thermostat housing mates with the block. Note: The pipes should be bolted to the thermostat housing before lowering the assembly in place to bolt it to the block. 6. Reinstall the intake manifolds. Install new gaskets and tighten to specification tightening from the center out. Lower intake manifold bolts/nuts Step one(all)........26-43 in-lbs Step two Nuts.............17-20 ft-lbs Bolts.............144-168 in-lbs Step three............ repeat step 2 Upper intake manifold bolts ........ 13-16 ft-lbs

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17y ago

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