Engine loosing power when accelerate on Vito

[Jimmi34]

I've been trying to sort this out myself with no success. I was on a journey of 1500 miles when the engine lost power. Couldn't go up the hills or was very slow. I phoned a friend and advised to disconnect the mass airflow sensor plug. It worked fine and managed to get home. I bought 2 new airflow sensors then I replaced IAT and MAP sesnsor all the same originals.
I have the same issue. At the moment I drive withe airflow sensor disconnected. Any ideas what might be? Shall I buy another airflow sensor? It drives me nuts.

 

[onefortheroad]

Is the air filter clean ?

 

[M80]

I bought a supposedly new MAF via ebay recently.
There are 2 date stamps, one on the MAF enclosure, one on the sensor within. Both were dated 2014.
As the box wasn't Continental but an ebay generic box I returned as clearly the seller was flogging old kit as new.

I can't comment on the MAF figures as my diagnostic show g/s. But my figures vary from 12 to about 120, depending on load / revs.

 

[mattkh]

I've been trying to sort this out myself with no success.

Do you still have the original MAF..?
If you do, then try cleaning it with a spray and put it back in and test.
Any photots before and after for MAF , and also the connector wires will be welcome.