Lamda Sensor or Airflow - Alfa Romeo Forum
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Lamda Sensor or Airflow

My car has the symptoms that are associated with a faulty lamda sensor as described by other members. When you pull off the car is very sluggish but at higher revs the performance is fine. When the car is stationary it takes a while for revs to drop to a normal idle.

Can anyone tell me where the sensor is located?

Is it possible that the airflow meter is faulty? How can it be tested?
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Re: Lamda Sensor or Airflow

to test the maf, disconnect and see whether it makes any difference, if no, its probably needs replacing or cleaning...

Remove the MAF - undo the metal clips with a pair of small pliers or lever off with small screwdriver, undo the cable tie which keeps the connector cable tidy to the air duct.and then the connector remove the MAF.

There are 2 TX secrurits screws that clamps the sensor to the MAF body...these can be undone with pliers as they are not to tight.

Pull the sensor head out and stick the MAF body a bowl of luke warm water and slosh about...use a sponge to clean the inside of the MAF body but do not touch the Mesh. then put back in the bowl and leave for about 20 Mins...

To clean the sensor head you need anti-static cleaner from Maplin or any radio hobby store..

Spray liberally all over the head......

You will see a channel in the sensor head, and will notice a wire running can clean this with a cotton swab with cleaner applied.....don't go to mad just apply gentle pressure.

At the side of the sensor is a metal plate within another can clean this using the cleaner and some tissue, wedge it in the grove and slide in and can use a small screwdriver to exert more pressure to clean the plate and the edges.

The sensor heads..electonics is sealed so donít worry too much...but still be careful.

When this is done....rinse the sensor head under luke warm running water from the tap and just cover the top part of the head where you have cleaned...

when done remove the MAF body that was soaking, test the mesh for cleanness with a cotton swab, if still dirty use the anti-static cleaner to clean more..and re wash in luke warm water.

Lay both the sensor and the MAF body...on a tea towel on a radiator to dry naturally...

Re-Fit the MAF all back together and put back on the car.

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Re: Lamda Sensor or Airflow

The Lambada screws into the top of the exhaust collector, in front of where the handbrake is, possibly (depending what model you have) in the section with the flexi joints in it.

It just unbolts (17 or 19mm).

The other end of the wires has a connector block - it connects around the brake master cylinder. Before you disconnect the block and pull the old Lambo sensor out, tie the new sensor to the old one, so that when tou pull the old one out, you're pulling the new one into place.

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airflow , lamda , sensor

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