OEM Buick Rainier Intake Manifold

Buick Rainier Intake Manifold Parts Questions & Experts Answers

• Intake Manifold
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  Q: How to replace the intake manifold with a 4.2L Engine on Buick Rainier?

  A: Starting the procedure to replace the Intake Manifold on 4.2l engine (VIN S - RPO LL8) 2006 buick rainier, 2006 chevrolet trailblazer, 2006 gmc envoy, and 2006 saab 9-7x vehicles involves first draining the fuel pressure and unbolting the Throttle Body. First disconnect the powertrain control module (PCM) by removing its retaining bolts and nuts before removing the fuel feed pipe from the Fuel Rail as well as the integral clip from the wire harness bracket. Begin by removing the engine wire harness bracket bolt and electrical harness and vacuum lines from the Intake Manifold. Disconnect the manifold absolute pressure (MAP) sensor electrical connector and crankcase ventilation hose and vacuum brake booster hose. Uninstall the generator but keep the Intake Manifold lock bolts in place before you start removing the Intake Manifold. Install the new Intake Manifold Gasket onto the Intake Manifold while tightening all bolts to 10 n.m (89 lb in) before reattaching the generator. Start by lubricating the crankcase ventilation hose then reattach the MAP Sensor electrical connector and refrill the electrical harness before reattaching the vacuum lines. Start by tightening the engine electrical harness bracket bolt to 10 n.m (89 lb in) while connecting the integral clip to its bracket. The next step is hooking up the fuel feed pipe to the Fuel Rail. Mount the pcm mounting studs with 6 n.m (53 lb in) torque setting and after that put the pcm on the studs before using retaining bolts and nuts which should reach 8 n.m (71 lb in). After threading the pcm harness connectors you should tighten the retaining bolts to 8 n.m (71 lb in). Reinstall the Throttle Body then connect the negative Battery Cable and verify leak areas by turning the ignition on with engine off for 2 seconds, followed by 10 seconds of off time and another turn on for leak inspection.