Q: How to replace the air cleaner fresh air hose on Buick LaCrosse?
A: The first step to replacing the air cleaner fresh air duct/hose is to loosen the clamps on the intake air duct, then take the pcv tube off the air intake duct. Take off the air intake duct from both the Throttle Body and the mass air flow (MAF) sensor, and then take the air intake duct out. During installation, first put the air intake duct onto the maf sensor and then join the air cleaner intake duct to the Throttle Body. Join the pcv tube back to the air intake duct, making sure you use 2 n.m (18 lb in) of force on the air intake air duct clamps and observe the fastener notice supplied in service precautions.
Q: How to replace the air hose outlet duct on Buick Enclave?
A: Begin this repair by removing the fuel injector sight shield and the pcv fresh air tube from its fitting at the camshaft cover before repositioning the tube aside. The air cleaner outlet duct must first have its clamps tightened at the mass air flow (MAF)/intake air temperature (IAT) sensor and Throttle Body before duct removal. Secure the air cleaner outlet duct to both the maf/iat sensor and Throttle Body while making sure clamps achieve 4 n.m (35 lb in) torque. Complete the installation by placing the pcv tube in position then connect its fresh air tube to the camshaft cover fitting before reinstalling the fuel injector sight shield.
Q: How to Service and Repair the Air Hose? What Steps Are Involved on a Buick Lucerne?
A: Start by removing the intake manifold cover before disconnecting three components: engine harness electrical connector from maf/iat sensor, electrical connector from maf/iat sensor to the air cleaner outlet duct, and pcv tube quick connect fitting from the outlet duct. Begin by removing the air cleaner outlet duct from the Throttle Body while simultaneously loosening its clamp at the Throttle Body. Then unscrew the duct from the maf/iat sensor before complete removal. Installation requires the air cleaner outlet duct assembly between the vehicle and the maf/iat sensor while tightening the maf/iat clamp to 4 n.m (35 lb in) of torque. You should install the duct to the Throttle Body before tightening its clamp at an identical torque setting. The pcv tube quick connect fitting should get reattached to the air cleaner outlet duct and the engine harness should reconnect its electrical connector to the maf/iat sensor before finishing with intake manifold cover replacement.