Problems related to Mass Air Flow Sensor 1994 Volvo 940?

[Foucherb]

I have been trying to troubleshoot an irregular stalling / starting problem on a 1994 Volvo 940 Wagon. The issue has not been reproduced at a service center but it is annoying.

During high humidity (rain or about to rain) and / or low barometric pressure, I have problems or I am unable to start the 940. The engine may also stall on days with the same conditions even after it has been running for a period.

It is as if there is water in the lines causing sputtering and loss of power.

Does it make sense that it could be related to the MAF Sensor? Any advice to resolve the issue would be appreciated.