Td4 Mas air flow operation strange

Hello,
I have a td4 freelander of 2005 and my original Mass air flow (205000km) does not work normally at low speed, normal with this mileage!
The problem is that with a new meter it's even worse!
and with the meter unplugged everything is fine!
Has anyone ever had this weird phenomenon ?
Sorry for my bad english

Ok what is the maf you fit? Genuine, bosch, pierburg or?

bosch genuine

Could not be the meter, can also be the MAP sensor, quite common.

yes, it's a common failure, but why everything works well with the meter disconnected ?

They are connected. That cured for me and I also unnecessary replaced the maf. You also did not describe any symptoms just that does not work normal at low speed.
This could also be a split hose one of the small ones. Check all of them especially the one in left side under the egr that goes to that black tank.

Do you have a synergy box fitted if so they usually only work any good with a pierburg MAF, check the maf plug for worn wires or breaks in the wiring.

I will check again on this side

hello.
I had the vacuum hose going to the egr stuck and a tiny air intake to the servo brake vacuum hose. It drive very well with the original mass air flow