ArkBird96

My car is throwing P0171 and P0174. System Lean Bank 1 and System Lean Bank 2. Also, from about 2400-2600 it bogs and stumbles, but it is fine either above or below that RPM. Does this sound like the fuel filter?

killaxtranz

iTrader: (3)

id start with fuel filter and then buy a fuel pressure gauge... could very well be pump.

cookba

iTrader: (10)

The MAF Sensor is dirty or vacuum leak downstream of the MAF sensor

ArkBird96

It's interesting that you mention that. I just changed my oil on Friday night, and i changed the air filter as well. Do you think some garbage (oil or otherwise) could have gotten on the sensor and screwed it up? The previous owner of the car had a K&N filter that was covered in oil. I removed it and cleaned the sensor with some MAF cleaner not too long ago. I might go pick up a new MAF and try it or clean this one again and see if it goes away.

ArkBird96

Sorry for the double-post, but it should be noted that it does this at all temperature ranges.

EDIT: how hard is it to change the fuel filter and what all is involved? Is there a how-to somewhere on-line?

ArkBird96

OK. I think I've fixed it. I cleaned my MAF sensor and I noticed some debris in the throttle body in between the sensor and the throttle butterfly. I vacuumed out the debris before I put the sensor back on. I also tightened down the hose clamps on both ends of the intake bellows.

I think that debris was being blown around by the airflow in the throttle body and hitting the sensor wires of the MAF.

I cleared both codes after I cleaned the MAF and the TB, and the bogging is gone and so far it hasn't thrown either of the codes.