Contents Section: Mechanical All sections

Installation (alternate Method) Cadillac DeVille Concours I final

Mechanical ~266 words

Carefully lower engine into position. Install bellhousing bolts. Loosely install 2 nuts to motor mount at front of axle. Install one bolt to cylinder head for transaxle brace. Install 4 bolts securing transaxle bracket to crankcase. Tighten fasteners to specification. See TORQUE SPECIFICATIONS table. To complete installation, reverse removal procedure. Recharge A/C system.

Removal

  1. Disconnect negative battery cable. Relieve fuel system pressure. See «FUEL PRESSURE RELEASE»(ref-1392-S41738135572000031300000) . Remove intake manifold cover (decorative shield) from above intake manifold. Disconnect air intake duct from throttle body. Disconnect transaxle vent hose and shift cable at bracket. Disconnect electrical connectors from throttle position sensor and idle air control valve.
  2. Disconnect accelerator cable and cruise control cable at throttle body. Disconnect spark plug wires from plugs in left cylinder head. Disconnect coolant hoses at throttle body and surge tank. Disconnect EGR pipe and crankcase ventilation pipe from throttle body spacer. Disconnect brake booster vacuum hose from intake manifold.
  3. Disconnect fuel rail ground wire from right cylinder head. Disconnect fuel line quick-connect fittings at fuel rail. Disconnect fuel rail bracket at EGR valve. Disconnect PCV hose from intake manifold. Disconnect fuel injector harness main connector. Remove bolts/studs and intake manifold.
CAUTIONIf throttle body was removed, DO NOT reuse old "O" ring seal. DO NOT apply silicone lubricant to "O" ring seal.

Note. Gaskets are secured to intake manifold with a snap lock. If plastic housing or rubber seals are not damaged, reuse gaskets.

If throttle body was removed, position NEW throttle body "O" ring seal on throttle body with petroleum jelly. Install intake manifold. Tighten intake manifold bolts to specification in several phases (start with inner bolts and work outward). See TORQUE SPECIFICATIONS table. To complete installation, reverse removal procedure.