Difficulty Level

Tools/Supplies Needed:

• 3/8" ratchet
• 10mm socket
• standard/flat screwdriver
• razor knife
• multimeter
• 9v battery
• -9v battery plug
• 2 small connectors

Procedure:

• first start by removing the rubber intake elbow going from the air box
• ensure that the car is up to full operating temperature
• disconnect the O2 sensor on the firewall
• start the vehicle, while running, push the door inside the air flow meter inwards
• if the vehicle's idle increases while smoothing out, the air flow meter does need to be cleaned or calibrated
• next remove the air flow meter complete from the vehicle
• allow it to cool down because it will hold the heat for a little while and this can affect the testing of the temperature sensor
• the multimeter will be required to check the resistance
• my probing pins #6 and #22, between the temperatures 15-30°C (59-86°F), the reading should be between 1450-3300ohms
• you can also use a heat gun or hair dryer to determine if the temperature sensor is functional
• if there is an issue with the temperature sensor, unfortunately there is no part which can be purchased to replace it, but you can replace it with another sensor from a different air flow meter assembly or purchase another used unit or a new unit
• next moving onto the potentiometer starting with the resistance test
• probing pins #6 and #7, use the multimeter on the resistance setting
• open and close the door to view the values either increase or decrease, if there is drops along the way, there is the possibility of either having a dirty contact or the contact has worn spots
• moving onto the next test using voltage to determine the quality of the potentiometer
• using a razor knife, cut the silicone around the plastic cap and remove it prying with a standard/flat screwdriver
• install the smooth connectors on the battery plug, then connect the 9v battery and plug onto pins #6 and #9
• using the multimeter on the voltage setting, put on the one test probe on the arm and the other on the ground or pin #6
• open and close to view the voltage increase or decrease and determine if there is any drops along the swipe of the potentiometer
• if there is any drops or extremely low voltage when the door is fully open, the swipe arm needs to be adjusted or have the contacts cleaned