OEM 2004 Chevrolet Malibu Exhaust Manifold

2004 Chevrolet Malibu Exhaust Manifold Parts Questions & Experts Answers

• Q: How to replace the exhaust manifold on 2004 Chevrolet Malibu?

  A: Rising the vehicle through use of a hoist represents the initial step for Exhaust Manifold replacement. The mechanic should detach Exhaust Manifold pipe-to-Exhaust Manifold nuts while keeping the flex decoupler joint free from damage because it has a maximum flexibility limit of six degrees. Pull the Exhaust Manifold pipe down past the studs to detach it from the manifold but keep it fastened onto the frame before lowering the vehicle. You need to begin by removing both the heat shield bolts then taking out the Exhaust Manifold and its heat shield. You should first disconnect the heated Oxygen Sensor (HO2S) electrical connection then take out the ho2s from its position on the manifold. The Exhaust Manifold nuts should be removed following gasket discarding. The installation process requires you to install a fresh Exhaust Manifold gasket onto the Cylinder Head before putting the Exhaust Manifold into position while following the issued fastener notice. Screw the Exhaust Manifold nuts until they achieve a torque of 18 nm (13 ft. Lbs.). Secure the Oxygen Sensor by torquing the connection between the ho2s and Exhaust Manifold pipe to 45 nm (33 ft. Lbs.). Complete installation by connector the manifold ho2s electricity together with the heat shield while fastening its bolts at 25 nm (18 ft. Lbs.). The next step is to set the Exhaust Manifold flange gasket on the studs with a new gasket before hoisting the vehicle once again. Install the Exhaust Manifold pipe flange onto the Exhaust Manifold studs by using 30 nm torque. Before driving lower the car then start up the engine to check for any fluid leaking.