Repair 7

How to Replace a Mass Air Flow Sensor in a 3 8 2000 Buick

Replacing the mass air flow sensor on your 2000 Buick 3.8-liter engine is relatively straightforward. The MAF sensor sits on top of the throttle body just above the air intake. The MAF sensor is a flat, plastic piece held in place with several screws and has an electrical connector attached to its left side. Replacement OE MAF sensors are available through the dealer and aftermarket replacements are available from most auto-parts stores.

Instructions

1

Open the hood of your Buick and locate the throttle body on the front of the engine. The air intake hose attaches to the front of the throttle body, making it easy to identify.

2

Disconnect the electrical connector from the end of the sensor by lifting the locking tab on the connector, then pulling it straight off the sensor. Locate the two screws on the top of the sensor--they are at opposite corners--and remove them with a Torx screwdriver.

3

Lift the MAF sensor straight up and away from the throttle body. Discard it and position a new MAF sensor on the throttle body, aligning the screw holes in the sensor with the threaded holes on the throttle body.

4

Install the two Torx-head retaining screws through the MAF sensor and into the throttle body. Tighten them with a Torx screwdriver, then push the electrical connector onto the end of the new sensor, making sure the locking tab snaps in place.