S10/T10 P/U 2WD L4-2.2L VIN 4 (1995)
Upper And Lower Manifold Assembly-Part Name
NOTE: A label containing the last four digits of the upper manifold assembly identification number appears above the power brake fitting
assembly as shown. The bar code (read by an optical scanner) also contains the component number for manifolds, and the four digits of the
identifying number. Refer to this number if servicing or part replacement is required. Refer to the disassembled view for identification of parts
during repair procedures.
REMOVE OR DISCONNECT
1. Negative battery cable.
2. Air intake duct.
3. Accelerator cable splash shield from accelerator cable bracket.
4. Accelerator, cruise, and transmission control cables.
5. Vacuum hose harness from top of air inlet.
6. Disconnect crankcase ventilation valve and power brake vacuum hoses from vacuum tubes at upper manifold.
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Position vacuum hoses out of the way.
7. Electrical connectors at Manifold Absolute Pressure (MAP) sensor, Throttle Position (TP) sensor, and Idle Air Control (IAC) valve.
8. Bolts/nuts attaching throttle cable bracket.
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Position bracket and cables out of the way.
9. Bolts/studs attaching upper manifold to lower manifold.
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Position Exhaust Gas Recirculation (EGR) and injector wiring harness out of the way.
10. Upper manifold assembly and gasket.
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Discard gasket.
CAUTION: Use care in cleaning old gasket material from machined aluminum surfaces as sharp tools may damage sealing surfaces.
Clean
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Gasket cleaning surfaces
NOTE: The upper manifold contains integral sealed throttle shaft bearings and parts that should not be cleaned or soaked in a cold immersion
cleaner. Use carburetor choke cleaner and a shop towel or nonmetallic parts cleaning brush to remove any carbon deposits.
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The upper manifold assembly contains the TP sensor, IAC valve, and sealed throttle shaft bearings which should not be subjected to a strong
