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Fuel trim readings

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Getting a couple of codes and they are confusing me along with the fuel trim readings.  Getting: P0300, P0301, P0302, P0303 & P1340 (all pending codes).  Looking at short term & long term fuel trim though it looks like bank 2 is an issue. These are from Torque Pro, waiting for Durametric to show up this week.


at idle:

STFT1: -1.56%

STFT2: 25%

LTFT1: 0

LTFT2: 0

MAF: 3.5 g/s


I have replaced:

all coils

all plugs


upper & lower AOS tubes

oil filler tub at crank & middle accordion

oil filler cap

new battery

all new o2 sensors


First through was vacuum leak, but using carb cleaner all over the engine I can't find one anywhere.  If I take off the oil filler cap the car stumbles like I would expect it to.


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Any history you have would help too.  Miles on car. When did the problem start. Anything happen around the same time. That way when you bought it?


The fact that it is on a single side of the engine helps rule a few things as less suspect.  Use the Durametric to look at cam deviations.

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Am I reading the fuel trims correct though?  Bank one seems ok but bank 2 is running rich isn't it?  The codes are all for bank one. I thought anything less the 5% was normal for long term. 


Cam deviation is the first thing in the list Wednesday when it arrives. 


Car had been running great then strmarted to through temhe misfire codes. 


I have a new cam sensor but haven't installed that yet, waiting to see what the timing is first. 


Car now has 106k miles on it. Bought it 2 years ago needing a coolant hose replaced for a steal. Needs a paint job bad and new seat covers, but I have a set of gt3 seats coming in that I will recover then next summer it's off to get a new paintjob. 


Since I have had it I have done all brake pads and rotors and normal oil changes. Had been running great the past 2 years. 

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