MAF: bad sensor effects

[w_stevo58]

Ok, I have a 97 Z28 six-speed.

Here's the problem: Wheather I accelerate from a dead stop or cruising my motor hesitates randomly between 4500- 5800rpm in every gear. The higher the gear, the more it hesitates. It feels like it is running out of fuel, but I checked it and its fine. It is throwing the P0100 code which is a MAF sensor circuit code. I was wondering if any one else had a similar problem. If any one has any ideas please post them. Thanks.

[Flash 97 WS/6]

I can throw a P0100 code by pulling the connector off of my MAF with the engine running . Seriously though, I would guess that either your connector is corroding a bit or possibly a wire in the harness is broken or shorting. Pull the connector on the MAF and take a look, then plug and unplug it a few times for good measure and see if this helps.

Could actually be the MAF going bad too, how frequently and quickly do you get the P0100 after clearing the code?

[gimp19]

That sounds like a bad MAF

[Injuneer]

There is a common problem with the pink +12V wire that goes to the MAF sensor. Seems more common on the later model LT1's. Pull the connector off the MAF. With the key on, engine not running, probe the pink wire terminal on the connector for +12V. Then probe the black/white wire for a good ground. Can't do anything with the yellow wire... that one is used to send the variable frequency signal to the PCM.

As noted, check the connector pins and the MAF pins for corrosion, or being bent. Then check the MAF sensor for dirt. If you have a K&N type filter, it is possible that is has been over-oiled and the oil collected on the sensing elements.

If you are getting misfires, does this show up in the PCM scan? There is a code for random misfires, and it is possible to get a misfire count by cylinder. That would tell you if it might be an ignition related misfire, like a plug, wire, coil, ICM or Optispark.