seany260
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« on: September 08, 2014, 10:50:49 PM »
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The file which I'm currently running in my 1.8t a4 is throwing an error for MAF signal to high intermittent. It only happens when bringing the car through its range or building boost in a high gear low revs. The traction control light come on when it logged the condition, that's how I know.
My guy who tuned the file says that the upper boost limit needs raised, but I think he has done this a few times already and it's still coming up.
Can someone give me there opinion if this is tuning related or do I need to start looking for a fault relating to the MAF.
Basically I'm running a tt/s3 225 setup.....
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« Last Edit: December 16, 2014, 04:06:22 PM by seany260 »
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nyet
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« Reply #1 on: September 08, 2014, 10:56:52 PM »
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Please read the sticky in this section and post logs and LTFTs
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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terminator
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« Reply #2 on: September 09, 2014, 08:21:30 AM »
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check for leaks.
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seany260
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« Reply #3 on: December 12, 2014, 07:36:37 AM »
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still got this maf fault and overboost, car is remapped so im guessing it is something to do with that.
16618 - Boost Pressure Regulation
P0234 - 001 - Limit Exceeded (Overboost Condition) - Intermittent
16487 - Mass Air Flow Sensor (G70)
P0103 - 001 - Signal too High - Intermittent
LTFT'S -0.4 & -12.5
WHAT WOULD NEED ADJUSTED TO STOP THESE CODES BEING THROWN AND STOP THE CAR FROM GOING INTO LIMP.
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nyet
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« Reply #4 on: December 12, 2014, 11:51:24 AM »
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That log looks fine. You'll have to get a log of the car when it actually goes limp.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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seany260
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« Reply #5 on: December 12, 2014, 12:09:16 PM »
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Yes that log is fine to the thanks of Dan's work.
Log of when it actually is in limp will just show no boost. It will follow.
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10101011
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« Reply #6 on: December 13, 2014, 12:59:37 PM »
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If the Maf is older than 5 years old or a cheap aftermarket MAF , you will get random fault codes. A cone air filter close to the Maf will cause high readings as well. You might not have a software issue rather a physical problem.
Lee
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Poor quality lingers long after the price is forgotten ....
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seany260
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« Reply #7 on: December 13, 2014, 01:14:39 PM »
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Standard air box and sensor is just over a year old, tho thanks for the info.  |
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armageddon
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« Reply #8 on: December 13, 2014, 04:09:14 PM »
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maybe wiring problem or KFMLDMX need to be adjusted??
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seany260
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« Reply #9 on: December 14, 2014, 09:49:47 PM »
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yes the KFMLDMX i think also needs adjusted for the maf high code, but can't find it, orignal file im using attached.
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littco
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« Reply #10 on: December 15, 2014, 10:58:14 AM »
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maybe wiring problem or KFMLDMX need to be adjusted??
It has been adjusted in just about everway i can and it still throws the error. Its the same code you get if you dont increase mlmax but yet to find it on the a4 files. I have spoken with DD about this directly and still at a stump.. Whats odd is that adjusting dmx just either speeds or slows the rate the mil light comes on/off.. I thought maybe becuase the maps strangly defined in the bfb ols that it could be related but agsin various versions all cause the same problem, although never hit limp mode |
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seany260
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« Reply #11 on: December 15, 2014, 01:15:39 PM »
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Will I was just about to make my first edit but seams you have tried everything already so I'll leave it alone, until you can find out the solution.
Really I don't know if it's the maf to high or upper boost limit code putting it into limp because both are being reported at the same time.
I will get a log done on my way to work 2night showing when the limp occurs.
Thanks for the info.
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littco
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« Reply #12 on: December 15, 2014, 01:20:07 PM »
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Will I was just about to make my first edit but seams you have tried everything already so I'll leave it alone, until you can find out the solution.
Really I don't know if it's the maf to high or upper boost limit code putting it into limp because both are being reported at the same time.
I will get a log done on my way to work 2night showing when the limp occurs.
Thanks for the info.
It'll be the upper boost limit, Maf signal too high won't throw boost at least on mine it didn't. I got the same codes but no limp which makes it more confusing.. |
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nyet
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« Reply #13 on: December 15, 2014, 01:21:49 PM »
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also log ps_w, msdk_w
Stupid question: is it possible to throw a MAF code if msdk_w is far enough off from actual MAF readings?
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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seany260
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« Reply #14 on: December 15, 2014, 05:28:20 PM »
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Here is the log, something tells me its boost putting it into limp because the traction light did not come up like it usually does and then go off again.
log4 was the 3rd gear run and the other one from dead stop when in limp.
thanks
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