Replaced air flow sensor per computer indication...check engine light still on

[eyes757]

Hey Guys,I have a 1998 Infiniti QX4. I have the check engine light on and the car cuts off while driving, especially when the weather reaches 30 degrees and above. Both Autozone and Nissan told me that the mass air flow sensor was bad. I replace it and the car ran well for a few days with the check engine light still on. Now day 4... the car dies when I put it in drive and groans like a wounded beast . Does anyone have any suggestions????.... I am at the end of my rope.

[elwesso]

Check the harness and connections.... If necessary, backprobe to the ECU, if you think you can do that, ill guide you in the right direction....

Basically we need to know what voltage the ECU is seeing....

Ill ask the stupid quesiton, but is the CEL still for the MAF?