1997 Infiniti Infinity QX4 Cuts out when press gas

Please use some punctuation so I know how to read your post correctly. We need the exact diagnostic fault code number to know where to start. How was this problem diagnosed? Usually when I hear that someone just told a car owner what's wrong, they never actually diagnosed it. They're just guessing. If a mechanic really did diagnose it, why didn't he put the part on right away and verify the problem was solved?

Most importantly, diagnostic fault codes never say to replace parts or that they're bad. They only indicate the circuit or system that needs further diagnosis, or the unacceptable operating condition. Over half the time when a part is referenced in a fault code, it is not the part that's bad. More often it's a mechanical or wiring issue.

Besides finding out the exact fault code number, you can look at the fresh air tube between the mass air flow sensor and throttle body. There can't be any cracks, leaks, or loose hose clamps. If any air sneaks into the engine that doesn't go through the mass air flow sensor, there won't be the corresponding amount of fuel to go with it.