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Home >> Isuzu >> 1992 >> Impulse XS, 2D Hatchback, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.6L 4-CYL - VINS [4,5,6] & 1.8L 4-CYL - VIN [8] >> Removal & Installation >> Upper Intake Manifold >> Removal (1.6L DOHC)

Removal (1.6L DOHC)

  1. Disconnect negative battery cable. Disconnect ground cables from upper intake manifold. Disconnect 2 harness connectors from throttle valve assembly. Disconnect Manifold Air Temperature (MAT) sensor connector. Disconnect throttle valve cable from upper intake manifold. On turbo vehicles, remove intercooler. See INTERCOOLER  under REMOVAL & INSTALLATION. If vehicle is equipped with a turbo, go to next step. If vehicle is non-turbo, go to step 3).
  2. Drain coolant. Remove air cleaner upper case and element. Remove Vacuum Switching Valve (VSV) assembly with vacuum pipe. Remove pressure transducer bracket. Remove intercooler rear bracket. Go to step 3).
  3. Disconnect PCV hose, air intake duct and Manifold Absolute Pressure (MAP) sensor vacuum hose. Disconnect brake booster vacuum hose and canister hoses.
  4. Disconnect canister pipes and MAP sensor pipe with bracket. Disconnect fuel pressure regulator vacuum hose. Disconnect throttle valve assembly with heating hoses from upper intake manifold.
  5. Loosen EGR valve bolts and EGR pipe at exhaust manifold. Loosen EGR pipe bracket bolt. Disconnect induction control (lower intake manifold) vacuum hose. On turbo vehicles, disconnect boost meter hose. On all vehicles, remove alternator harness clip from upper intake manifold.
  6. Disconnect upper intake manifold bracket and engine hoist bracket. Remove upper intake manifold from vehicle. See Figure .
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