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On the 2.2 zafira, z22se engine. There is no MAF sensor. Which is why you can not find it. Instead it uses a combination of the IAT (Intake Air Temp) and the MAP (Manifold Air Pressure) sensors.The IAT is the small plastic sensor on the side of the intake duct.The MAP sensor is just after the throttle body. You need to take the whole throttle body off to get at it.
Standing in front of the vehicle it's on the left front side of engine kind of low.
Be sure to get a gasket as well.
Drain the cooling system.
Loosen the air cleaner outlet duct clamps at the following locations:
Throttle body
Mass airflow/intake air temperature (MAF/IAT) sensor
Remove the radiator inlet hose clip from the outlet duct.
Remove the air cleaner outlet duct.
Reposition the outlet hose clamp at the water pump.
Remove the outlet hose from the water pump.
Remove the water pump inlet bolts.
Remove the water pump inlet and thermostat from the water pump.
Water pump inlet/thermostat assembly location
To install:
Install the thermostat and water pump inlet to the water pump.
Install the water pump inlet bolts.
Tighten the water pump inlet bolts to 11 ft. lbs. (15 Nm).
Install the outlet hose to the water pump.
Position the outlet hose clamp at the water pump.
NOTE Important: Align the arrow at the throttle body end of the duct with the throttle body attaching stud.
Install the air cleaner outlet duct.
Install the radiator inlet hose clip to the outlet duct.
Tighten the air cleaner outlet duct clamps at the following locations:
Throttle body
Mass airflow/intake air temperature (MAF/IAT) sensor
Tighten the air cleaner outlet duct clamp screws to 62 inch lbs. (7 Nm).
IAT is incoming air temperature sensor. Look from intake air hose/duct up to throttle body, for sensor that sticks into side or top of ducting that airflow coming in through there, or at front of throttle body area.
Your intake air temperature sensor is part of the MAF (mass airflow
sensor) and located right off the air filter housing in the large tube
going to the throttle body.Its held on with 2 screws and has a 5 wire
electrical plug going to it.
the IAT is a small round sensor with 2 wire going to it, the sensor is located in the air filter housing lid or in the flexible air intake hose to the engine from the air cleaner box.
Your intake air temperature sensor is part of the MAF (mass airflow sensor) and located right off the air filter housing in the large tube going to the throttle body.Its held on with 2 screws and has a 5 wire electrical plug going to it.
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