The MAF sensor works inside the hose essential from the air filter to the engine intake valve.
Turn off the vacuum and use a screwdriver to disconnect the hose clamp holding the intake hose to the bottom of the mass air flow sensor going toward the engine. Pull the hose off and place it clear of the sensor. Carefully disconnect the wiring to the mass air flow sensor itself.
Instructions
1. Connect a OBDII-type engine law reader to your motorcar using the connexion Harbour underneath the steering rotate sphere. Turn the ignition to the "on" position on the contrary discharge not inauguration the engine. Let the code reader connect with the van personal computer to glare provided it Testament build a decree for a defective Bulk air flow sensor. Confirm if the sensor is truly triggering a malfunction principle or not. Erase the regulation stored in the machine using the reader tools. Turn the vehivle off and disconnect the edict reader.
2. Stand the hood and establish the air filter box. Unlatched the air filter box and pull elsewhere the aged air filter. Avail a shop vacuum to suck up all the debris, dust and dirt inside the filter box. On the other hand, create not poke the vacuum into the cavity going to the Bulk air flow sensor.
3.The Bulk air flow (MAF) sensor in a vehicle plays a role in engine combustion and emissions discipline. As one of a character sensors built into an engine conception, the sensor provides typical readings to the machine's on-board diagnostic machine, telling it if sufficient air is entering the engine or not. Thanks to the sensor involves a as well thin, touchy wire as the reading mechanism, provided it gets gunked up the readings can ripen into defective. Cleaning and retesting the sensor Testament end whether it needs replacing or fair-minded preservation. Use the screwdriver to carefully push the connection tab free if the wiring junction uses a snap-lock to connect. Place it safely clear of the sensor unit.
4. Use a screwdriver with a star-shape, or security Torx bit if the sensor is secured to the air filter box with screws having star-shape heads. Use a regular screwdriver if the screws are Phillips-head or flat-head style. Carefully loosen and remove the sensor screws and put them in a safe place to avoid losing them. Use the shop rag to carefully twist the sensor back and forth by hand until it comes free from the air filter box.
5. Move the sensor unit to a clear workspace. Put a shop rag underneath it and do not touch the sensor mechanism inside. Attach the spray nozzle to your bottle of mass air flow sensor cleaner and spray the sensor clean with five or six good sprays. Spray downward so the excess hits the rag underneath. Examine the wire inside without touching it to confirm it is clean. Let the unit air dry on the rag for 30 minutes.
6. Reattach the sensor, without touching the inside wire mechanism, to the air filter box and following the above removal steps in reverse order. Install a new air filter in the air filter box and close it up. Confirm you reconnected the sensor wiring, re-installed the sensor's screws, reattach the air hoses and re-tightened the hose clamps. Check for missing tools as well. Close the hood and restart the car. Let the engine warm up and drive it to check if the sensor gives off a trouble code again. Replace the sensor unit completely if it does.
