The 2001 Acura Integra was available with six different engine sizes. The 3.2L and 3.5L models were the most popular and the most alike when considering service and repair issues. In these two engines, the manifold and throttle body are a single unit, which makes removal and installation of the manifold a bit simpler. If engine performance and/or fuel efficiency is lagging, it may be time to replace the intake manifold.
Instructions
Remove the Intake Manifold
- 1
Begin by disconnecting the negative battery cable. Relieve the pressure in the fuel system and drain the cooling system.
2Disconnect the air intake duct, the water bypass hose, the cables to the throttle and cruise control, the brake booster hose and the evaporative emission (EVAP) hose. Label the hoses as they're disconnected
3Remove the intake manifold cover and the strut brace. Loosen the intake manifold nuts and bolts. Start in the center and move outward while working in a criss-cross pattern. Remove the nuts and bolts.
4Check and disconnect all vacuum hoses. Lift out the intake manifold and throttle body as a single unit.
5Inspect the intake manifold carefully for any damage or cracks. Replace any parts that are damaged.
Install the Intake Manifold
- 6
Transfer the necessary parts from the old manifold to the new one. Discard the damaged manifold.
7Set the intake manifold in place and fasten it to 16 foot pounds. Position the upper intake manifold cover and tighten the fasteners to 108 inch pounds.
8Tighten the TCS acutator bolts and then the strut brace bolts. Use 16 foot pounds torque. Work in reverse of the removal process to install the manifold.
9Reconnect the air intake duct, the water bypass hose, the cables to the throttle and cruise control, the brake booster hose and the evaporative emission (EVAP) hose. Verify all connections.
10Verify that all vacuum hoses are in good condition. Reconnect the hoses.
11Refill the coolant in the cooling system. Reconnect the negative battery cable.
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