P0102 Maf or Vaccum

[Ricker]

Need some xpert advice...

Truck was throwing p0102 code. Cleaned MAF, didn't help. Put new ACdelco filter in didn't help. Changed MAF sensor, code was gone then came back. Rewired new harness code was gone for longer then return tonight. What the hell is going on?

There is no Vaccum leak. I'm now getting a small jerk after the 1-2 shift when truck reaches operating temp. New plugs, cables, fuel flush and this is turning into my worst nightmare.

The new MAF was a caldrone, could it really be that it's not an AC delco part? I know someone out there has had to have this problem. Thanks in advance for the advice.

You guys are rock! Thanks again.

 

[M3PO]

It is tough to say.
Take no offense, but I would put it in the hands of good tech, rather than just replacing parts and rewiring sensors.

Good luck!

 

[Ricker]

I appreciate the advise, I'll probably take it in this weekend.

 

[smartdumbphone]

This is a long shot since the last msg was in 2011. You ever figure out what it was cuz im having the same issue with my 04 yukon denali

Sent from my HTC One_M8 using Tapatalk

 

[PNWYukon]

• Inspect the harness of the MAF sensor to verify that it is not routed too close to the following components: The secondary ignition wires or coils, Any solenoids, Any relays, Any motors

• A low minimum air rate through the sensor bore at idle or during deceleration may cause this DTC to set. Inspect for any vacuum leak downstream of the MAF sensor.

• Inspect for any contamination or debris on the sensing elements of the MAF sensor.

• A wide open throttle acceleration from a stop should cause the MAF sensor parameter on the scan tool to increase rapidly. This increase should be from 3-10 g/s at idle to 170 g/s or more at the time of the 1-2 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.

• A high resistance of 15 ohms or more on the ground circuit of the MAF sensor may cause this DTC to set. A high resistance may cause a driveability concern before this DTC sets.

• A high resistance of 15 ohms or more on the ignition 1 voltage circuit can cause this DTC to set. A high resistance may cause a driveability concern before this DTC sets.