Originally Posted by gmercoleza

When I tested mine, the output voltage was 1.462 with key on engine off, which is way high. When I blew a little bit into the MAF, the voltage would go both up and down (it should only go up) and was very erratic. Upon starting the engine, it was at 1.64 (a tad bit high). I didn't bother with the full-throttle test, as it was very evident to me that the MAF was malfunctioning.