P0171: System too lean (bank 1)
#18
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I used an inscents stick to check for any air draws on the whole intake system, and couldn't find anything. So i took out the mass airflow sensor, it was a little grimey so i sprayed it down with brake cleaner. The o-ring on the sensor was a little stretched out, and i happened to have one the right size in my garage. I replaced that and lightly lubed it with a light weight gun oil. It seemed to fit in better, and sealed right down.
Then I disconnected the cold air intake from the rubber flex pipe by the intake manifold, cleaned the surface areas, used a little more gun oil and put it back on. The rubber flex pipe definately slid on to the CAI further, and had more of a solid seal.
After about 40 minutes of driving i noticed a smoother idle and rev. So far, no code. I'll be going for a longer drive this evening, so we'll see what happens. I have a feeling that it was just a combination of poor seals and a dirty sensor. Time will tell.
Then I disconnected the cold air intake from the rubber flex pipe by the intake manifold, cleaned the surface areas, used a little more gun oil and put it back on. The rubber flex pipe definately slid on to the CAI further, and had more of a solid seal.
After about 40 minutes of driving i noticed a smoother idle and rev. So far, no code. I'll be going for a longer drive this evening, so we'll see what happens. I have a feeling that it was just a combination of poor seals and a dirty sensor. Time will tell.
#20
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i've got the same problem man, from day 1 after putting RRM's CAI i'v been getting the same code...i've re-tightened everything...put the stock back on...checked everyway i no how for leaks...i think its just the intake
#22
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Originally Posted by MitsuSkot
# The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters (K&N, etc.) can cause the MAF to become dirty if the filter is over-oiled
#23
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i was just outside messing with the MAS and i realized that my hole in the intake isn't perfectly round...could someone with the RRM CAI go look under there hood and see if there O-ring is completely incased or if its supposed to stay atop. thanks
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For those of you that cleaned the MAF with cleaner etc. What all did you spray down or not spray? I have a used MAF that needs cleaning and I want to make sure I don't mess it up before installing.
WADAD
WADAD
Last edited by WADADLIG_OZ; Apr 24, 2006 at 02:39 PM.
#27
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Originally Posted by WADADLIG_OZ
For those of you that cleaned the MAF with brake cleaner etc. What all did you spray down or not spray? I have a used MAF that needs cleaning and I want to make sure I don't mess it up before installing.
WADAD
WADAD
Mike