Difficulty Level

Tools/Supplies Needed:

• contact cleaner
• razor knife
• 7mm socket
• 1/4" drive ratchet
• standard/flat screwdriver
• phillips screwdriver
• soldering iron
• solder
• short strand of 18 gauge copper wire
• 5mm allen wrench/key
• paper
• lint free cloth
• small zip/cable tie

Procedure:

• spray the inside of the air flow meter with a sensor safe cleaner to remove any oil residue or dirt
• remove the plastic cover which cover the electronics by taking a razor knife, cut away the silicone, then using a standard screwdriver pry the lid away from the case
• once the case is removed, then clean away any of the older silicone, it should peal off with your fingers
• remove the two spade connectors going to the pinout plug
• remove the pinout plug by removing four phillips screws, then pull plug out
• if your air flow meter is a newer model, remove the spade connector on the arm as well
• loosen the 7mm bolt holding on the wipe arm
• you may need to separate the clamp portion with a standard/flat screwdriver
• pull the wipe arm upwards
• now you have direct access to all the contacts
• if you find that your temperature sensor is faulty, there is no part which can be purchased to replace that specific item but you can get a used air flow meter and remove the sensor from there or purchase a new unit
• the temperature sensor can be removed but removing the circuit board which is held in with four phillips screws
• the temperature sensor is held in with silicon, use a small wedged chisel, go along the side of the backside of the sensor and slowly pry it upwards
• installing a new sensor does need to be resealed in place using a sensor safe rtv sealant.
• using the paper, rub the contacts to ensure they are clean
• spray the contacts down with contact cleaner, then rub again with the paper
• finally rinse with contact cleaner and wipe away with a lint free cloth
• to adjust the wipe arm, pull the arm downwards towards the circuit board, and bend the other portion slightly outwards (this will move the wipe arm closer to the pivot point)
• test fit the wipe arm to ensure it does not rub on the circuit board or cause any issues
• if your unit requires an update, get a length of 18 gauge black copper wire slightly longer than the electronic cavity, strip both ends
• clean both surfaces where the wire will be soldered to
• using the soldering iron, solder one end of the wire to the stationary arm coming from the pinout plug, allow for it to cool down and secure the zip/cable tie
• reinstalling the pinout plug in the unit, then solder the other end of the wire to the wipe arm
• -as for the idle screw, that required a 5mm allen wrench and the factory setting is three turns outwards
• reinstall the wipe arm and ensure it is tightened down firmly
• connect the spade connector and ensure everything is put back into place
• reinstall on the vehicle to ensure the unit is functioning correctly
• the unit can be adjusted, both the gear and that idle screw, but I recommend having the correct equipment to measure the vehicle's air/fuel ratio
• once you are satisfied, use a sensor safe sealant to install the cap back on