96 Suburban stalling and cutout

[chevelle_ss]

I have a 96 sub (gas) that has an intermittent problem. Intermittent means that it will not have the problem for a week but does it multiple times in the same day (both morning and evening on my 7 mile drive to/from work).

The truck will act like the ignition drops out or it is momentarily starved for fuel while driving down the road...usually around 45 MPH and after it has warmed up a little (so presumably it is in closed loop). The other thing is that it will just stall at a stop light. Not every time, but once out of 10 stops or so. It stalls and then cranks right up. I've even had it in park after driving it and had it stall in the driveway.

The only code it threw was a P0102 (Mass or Volume Air Flow Circuit Low Input) when it stalled at a light, but the stored data was bogus since it was at 0 RPM. So I think that P0102 code was probably just the effect of the stall and not the cause.

The only things I have done are checked the distributor cap (cleaned the electrodes that had some residue on them) and hosed down the MAF sensor. Plugs and fuel filter have less than 10K on them.

Sooooo, I have a couple of questions...

Anyone have any suggestions? I'm pretty clueless on how to proceed.

[Blue Bowtie]

If ignition power is cut, the PCM won't consider any "strange" sensor input as a problem, since it would presume the engine is not running. I'd start by verifying ignition power is constant.