OEM 2009 Cadillac XLR Fuel Injector

2009 Cadillac XLR Parts Questions & Experts Answers

• Q: How to replace the fuel injector and fuel rail on 2009 Cadillac XLR?

  A: Start Fuel Rail and Fuel Injector replacement by using ch 48027 or skipping it to remove fuel system pressure, then take off the supercharger inlet duct assembly's front section. Compressed air then cleans the supercharger fuel ports and rail before disconnecting electrical connections from the sciap, baro and MAP Sensor devices and the vacuum tubing from map and sciap sensors. Set aside a shop rag beneath the supercharger front. This prevents coolant contamination of the Drive Belt while you remove the sciap, baro, and map sensors together with their bracket. Take care that no coolant drips onto the supercharger Drive Belt. Drain the charge air cooling system partially before removing the front section of the charge air cooler front manifold assembly and discarding its o-ring seals for positioning the manifold with hoses away. Perform the disconnection of the air inlet temperature 2 sensor, supercharger bypass solenoid valve electrical connector, and vacuum line from the supercharger actuator valve electrical connector. The repair process begins through Fuel Rail connection point removal from the compartment line before eliminating electrical connectors connected to fuel injectors (1, 4, 6, 8) from engine sides. Gently remove the ground wire from the right rear injector rail bolt as well as the oxygen sensor electrical connector assemblies (1, 2) from the brackets at each side of the Fuel Rail. Users must first remove the Fuel Rail supercharger attachment clip before extracting the Fuel Rail attaching studs and relocate the rear inlet duct accordingly to pull out the Fuel Rail supercharger assembly. Start by removing the injector lower o-ring seals then proceed to eliminate the retainers from the fuel injectors depending on requirement before extracting the fuel injectors from the Fuel Rail. Include clean engine oil for lubricating new Fuel Injector o-ring seals prior to Fuel Injector installation and secure them to the Fuel Rail using new retainer clips following the orientation of the electrical connectors toward the crankshaft centerline. Begin by lubricating fresh o-ring seals for each injector spray tip followed by Fuel Injector and Fuel Rail positioning on the supercharger assembly before carefully pressing the Fuel Rail assembly downward until complete installation. Secure the Fuel Rail to the front supercharger clip after screwing in its attaching studs to a torque of 10 nm (89 lb in). The procedure requires installing oxygen sensor electrical connectors (1, 2) on each side of the Fuel Rail brackets while grounding the wire to the right rear bolt and attaching electrical connectors (1, 4, 6, 8) to both engine sides. Turn on the power and check all parameters within range. Then proceed with reconnecting the engine compartment fuel line fitting to the Fuel Rail attachment and vacuum line to supercharger actuator valve connection and supercharger bypass solenoid valve electrical connector. Performs the following procedure while using new o-ring seals: reconnects the electrical connector to the air inlet temperature 2 sensor then installs the front section of the charge air cooler front manifold assembly followed by reinstallation of sciap, baro, and map sensors with bracket. Resecure connections between electrical sensor connectors and the map and sciap units alongside vacuum line installation. The last set of steps includes installing the supercharger inlet duct assembly front section together with adding coolant to the charge air cooling system before checking for fuel system leaks and putting back the engine sight shield.