The graph in alldata said that at no flow the MAF should read around 4.0 volts, 2.4 at 1/4 flow, 1.6 half flow, .8 3/4 flow, .4 full flow. When cranking it is fluctuating between 4.2-2.9 volts. The reading I was getting looked right to me, I am I wrong??? Login to read more.