TraptLP

iTrader: (2)

I recently got a mail order tune by Frost. After reinstalling the tuned PCM I was throwing P0131 and p0151. After a lot of diagnosis, I determined that my MAF was bad. I replaced it, and it made a huge difference. No more P0131 and P0151 codes being thrown.

But now my car is throwing a P0102 code(Mass or Volume Air Flow Circuit Low Input). I did some more work trying to figure out exactly why this code is being thrown now, and found a massive vacuum leak in the PCV system. I fixed it and cleared the code, but still no cigar.

The car idles beautifully and runs extremely strong. Does anyone else have any experience with this? Whenever I clear the code I hear a slight sputter and the code immediately comes back on.

Any input is appreciated.

I also forgot to add that the engine sensor fuse is not blown.

AmDWs6

check your MAF's wiring.

i was testing with my brother's 99 z28 when i just got an ls2 maf for my 02 Ws6 .. when you remove the MAF you'll notice a change in rpm & when you put it back again you'll notice a change in rpm too or a tick sound, we had hiss wiring wrong so the maf didn't work correctly

just check out your MAF's wiring.

TraptLP

iTrader: (2)

I unplugged the MAF while the car was running and I noticed it change tones. This means the MAF is working properly?

LS6427

iTrader: (2)

It's working. Unplug it when the engine is dead cold and it should really make a difference. The MAF is in play when the engine is cold, once it warms up the 02 sensors take over operating the engine.....mostly. Then when you go WOT after the engine is warmed up, the MAF comes back into play during the hard run.

.

TraptLP

iTrader: (2)

I guess the only thing I can do is check the voltage at the harness.

TraptLP

iTrader: (2)

Does anyone know if an 02 sensor wire rubbing against a header could cause this code?

TraptLP

iTrader: (2)

I also noticed that the engine sensor fuse in my car is a 25 amp and it calls for only a 20 amp. Can fuses go bad without actually appearing to be bad?

AmDWs6

yes fuses sometimes can become crappy but that's not the case
from your code though i would check my MAF's wiring
what maf are you running if its an ls2 maf what adapter?
the one where you have to cut the wires and reconnect or the plug and play one?

if it is an ls2 maf with the cutted wires adapter make sure you've got the correct wiring.

TraptLP

iTrader: (2)

Its a re-manufactured MAF i bought from autozone. It fixed my p0131 and p0151 but caused a p0102 which is blowing my mind right now.

AmDWs6

can you post a picture of it "on your car"...