I know theres a ton of stuff on here for MAf sensors already. Any direction as far as what my findings indicate apretiated. Also i can use this thread to track my findings.

Can't seem to find the thread that I found a posted link to the diagnostic flow chart for the mass air flow sensor. As far as code 34. But i have pictures saved of the chart.

Testing in step 3 between terminal B of the disconected harness and ground wire I read just over 5 volts.
step 4 I hooked up a test light between terminal A and C and the light comes on. chart says if light on then Faulty MAF Sensor connection or Sensor. ( does this mean my wiring is good? and somthing esle is causing my Maf sensor error or this Maf is dead to?)

( scicne this is tested with sensor disconected, power on, can't tell me if sensor good or not. Had replaced sensor previously and belive original to also be good. Something of note, I dropped and broke glass on light I was using. whein I put back on with glass broken smoke came from bulb, was thinking its an oxygen mixing thing. then I connected two wires between terminal A and C and my jumper wires cought on fire.)

I retested signal form ECM at the harness that goes to maf while disconected (terminal B) still got the 5v when ignition on engine off.
I stuck a wire into terminal B and plugged in the MAF, Reading I was getting out of terminal B with maf hooked up at Idle was real speratic, all the way down to almost nothing jumping around mostly between 1v and 2.5v up to almost 4 volts

But if light comes on between terminal A and C of the connector but I still get the 5v refrence from the ECM. What does this tell me? Does it mean the ground is broken? any direction from here will be helpful.

Terminal A is orange going through a relay/fuse/Battery. And Terminal C looks to be a ground. With light turning on between them. What does it tell me? That the wire from the battery and through fuse/relay is good? And is the ground suposed to stop the circuit? is that why the test light is not suposed to come on? Reading article on test light. leads me to belive that my findings show that my wiring up to my connector is good. If ground is good then when power is connected to ground, test light should illuminate?

Using multimeter again on Terminal B(to ECM)I get 5.3v
on terminal C(to battery) I get the 12.45 volts same as battery test.

Vacuum gauge connected to a vac line that goes to my manifold reads 15-16gh at idle, drops down when open throttle, when release throttle jumps up to 20gh and back to the 15-16gh

(side notes) I am extereme newb to using multimeter, and I replaced maf sensor and many things in car before to not much avail. Trying to check the wiring or whats up with this.

Took maf sensor off blew it out with air as was still clean in there and I am out of electric cleaning spray. Eliminated the possibility somthing got stuck in the there, plenty of air flow.

Called Auto parts store I got my Maf sensor from in August, they warrenty it for a year, so gonna switch it out in the morning *crosses fingers

 

Replaced MAF sensor, all better