Chasing P0101

greatmizzou · July 21, 2019

Ok so i just got done towing my 4,000lb camper through the midwest over the weekend after replacing the intake manifold. Power feels much more responsive and strong. MPG seems better towing too, i averaged about 9-10mpg towing at 65mph and that seems about right for my setup. I was getting like 8-9

I was flipping p0101 constantly when accelerating and now I did it only once on way in and once on way back. Frustrated but I get it wouldnt just magically disappear.

circumstances if tripping p0101 is this. I tow for several hours to start the trip and pull into a gas station to refuel. After fueling up, i leave and accelerate to get into highway speed again, p0101 trips as I pass 40mph to 55 or 65mph. I clear the code and it doesnt reappear during the rest of my travels.

is this maybe a symptom of a clogged cat? So basically I would get it a lot when accelrating uphill or accelrating in general, but now its this odd thing of only after accelrating after a brief stop to refuel.

02 silverado 1500 ext cab 5.3 4x4. 3.73gears. 175kmiles

sefiroxx · July 21, 2019

MAF sensor.

Try some MAF cleaner.

CamGTP · July 22, 2019

Yeah, that's a range/performance code.

Cleaning it may do something but it may require a new OEM MAF sensor. Or possibly a new harness to go with it.

davester · July 22, 2019

Get an oem one (or acdelco), as these vehicles seem to prefer them. I bought a new third-party one from napa (no idea what the brand is, just not acdelco), and it would randomly generate p0101 codes on cold days during the winter here. Put in a used acdelco from a parts truck I bought for the 4wd system, and haven't got another p0101 code since.