Maf sensor P0103

[offiedk]

Hi

I am getting the P0103 code and i know it's the maf sensor.
I have checked the wire and i am getting 12v (red) and ground (black) but i have 5v at the signal wire (yellow) when its unplugged and the engine isn't running, is that right ? (Just found out, that is correct)
When the engine is running and it's plugged in its sends 1,5v to 2,5v at idle going at a loop.
the sensor is 2 years old a from Walker and has runned for 5000 miles

So it's a new sensor, am i right?

Thanks
JJJ

 

[MrMarty51]

Hello JJJ.
Welcome to the forum.
When You replace that sensor, try to get an AC Delco. They usually work much nicer on a GM unit and last much longer too. USUALLY.

 

[Wreckinball67]

If you are using a K&N type air filter that can eventually cause you issues. The oil from the filter will collect on the tiny wire sensor that is the MAF sensor. Try removing the sensor and clean it with spray cleaner like CRC electrical cleaner. May solve your issue...it did mine.

 

[Will L.]

If you are using a K&N type air filter that can eventually cause you issues. The oil from the filter will collect on the tiny wire sensor that is the MAF sensor. Try removing the sensor and clean it with spray cleaner like CRC electrical cleaner. May solve your issue...it did mine.

Agree with this 100%. I am a big k&n fan and this is a consistent issue from them.

 

[dbrannon79]

Howdy @offiedk I honestly didn't know GM added a maf to the mix on the newer 6.5's, but it does sound like it has gotten some debris on it. Like Will and MrMarty said, try cleaning it good with something like the electric cleaner spray. they do make a smaller can of cleaner specifically for maf sensors. I have heard others that own gassers say it's a maint. thing to clean them every so many miles. Just don't use an air compressor under high pressure or regular carb / brake cleaner on it. that can destroy it quickly.

 

[offiedk]

Thanks for all your fast responses.
Just gave a rinse with some electric cleaner, no change.
also on my tester it just jumps between 0-255.
I just need use som more money and buy a need sensor for this old giant

 

[offiedk]

Hello JJJ.
Welcome to the forum.
When You replace that sensor, try to get an AC Delco. They usually work much nicer on a GM unit and last much longer too. USUALLY.

How about a delphi? ac delco seems to be sold out at rockauto and summit

 

[dbrannon79]

I think delphi is a decent brand. I myself have not heard or seen anything bad from their parts. I'll let others chime in on that, they may have more experience than I do!

 

[dbrannon79]

if you can get the GM or AC Delco part number from RA, do a search on amazon and other authorized distributors. if you look on the AC Delco's site, they list all their authorized distributors.

 

[MrMarty51]

I’ve never had any problems with the Delphi products I have bought. Kind of a go to source if the AC Delco units is NA

 

[offiedk]

New sensor from Acdelco received and installed, finally i am getting a reading on my tester.

 

[Wreckinball67]

Isn't it amazing that there can be such a difference between parts brands!