No BLM 150-went Down after unpluggin MAF

[V6Turbo]

All,

I think I found my problems with High BLM-143 to 150.

I unpluggged the MAF Sensor and went into LIMP mode. The BLM's went down to 123~128. Is this is a good confirmation that the MAF sensor is the root-cause to my High BLMs'

Can the MAF still be a problem even if the scanmaster and stays around 5 to 6?

Thanks in advance.

 

[MistaScott]

MAF # should be 5-6 gps in park.

Make sure you have the correct MAF: connector should be 90* from the MAF cylinder. It should say AC on it meaning AC Delco.

I don't think a 128 BLM with MAF unplugged means the MAF is to blame necessarily. Without the MAF plugged in, the ECM has no air metered. The LIMP mode may use a 128 default.

Best thing to do is swap with a known good MAF, and that way you've eliminated it as a suspect.

 

[V6Turbo]

ttt