2002 Buick LeSabre Throttle Position Sensor

You will need to assure the cable is under the hook in the Throttle Body lever.

You will need to disconnect the electrical connector from the intake air temperature (IAT) sensor, carefully remove the intake air duct from the throttle body and air cleaner cover, remove the screws retaining the air cleaner assembly cover, remove the air cleaner cover and carefully remove the Air Filter element.

You can thoroughly check for any external leaks. If no external leaks are found, then replace the intermediate Intake Manifold Gasket and the throttle body gasket. When changing the throttle body gasket, the nuts that retain the throttle body should be replaced with a new design that improves torque retention. A medium-strength thread locker should be applied to the studs before installing the new nuts.