A well working MAF sensor on the TD5 engine is a must. Ideally you should be getting a reading of 55-60gr/hr at idle, slightly more in colder weather when the engine is cold – anything significantly outside of this indicates a fault and the TD5 MAF sensor should be replaced.
You can check your Mass Air Flow Sensor using a multimeter as shown in this video : https://www.youtube.com/watch?v=JzrP1saTm9A
Returns: this product is subject to our normal returns policy and general terms and conditions. It cannot be returned simply because it not solve your problem. Products must sealed in their original packaging unless they are faulty. All air flow sensors claimed to be faulty are checked when returned.