Can any one tell me how many Lbs/sec the MAF should read at idle and at about 2500 RPM. I am getting a reading of .08 at 1500 Rpm.

Also my O2 sensor on B2 Sensor 2, has bottomed out at 0.0V. It does shoot up to .725v but I thought the range was supposed to be between .1-.9v.

Trying to determine some rough running. Getting intermittent P0174, but the CEL does not come on all the time. Giving how poorly the truck is running it should be on.

Thanks