LTFT not moving from 0% after clearing codes

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Topic: LTFT not moving from 0% after clearing codes (Read 4012 times)

theaznal

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	LTFT not moving from 0% after clearing codes « on: April 29, 2016, 09:34:40 AM »

Hi -
I cleared my codes a few days ago and have driven normally, which includes plenty of WOT.

The STFT is behaving normally for my Mono Lambda tune, but LTFT still says 0%.

There are no active codes. Any idea on what caused this or what I can look after to resolve it? Huh


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vwaudiguy

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	Re: LTFT not moving from 0% after clearing codes « Reply #1 on: April 29, 2016, 11:18:24 AM »

Can we get more detail on your setup? Ecu number, for example? I'm going to guess R32 turbo.


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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."

theaznal

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	Re: LTFT not moving from 0% after clearing codes « Reply #2 on: April 29, 2016, 01:09:14 PM »

Its a Daz file on a 8D0907551 Mbox.
120lb injectors, pt6466 turbo, built block, worked 2.8 heads.
Blow thru 82.55mm HPX maf. Have had no issue with fuel trims not working until now.

Thanks for any ideas.

Quote from: vwaudiguy on April 29, 2016, 11:18:24 AM

Can we get more detail on your setup? Ecu number, for example? I'm going to guess R32 turbo.


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vwaudiguy

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	Re: LTFT not moving from 0% after clearing codes « Reply #3 on: April 29, 2016, 01:12:31 PM »

Had a car do this if the throttle body wasnt realigned after a code clear as strange as that sounds. Might want to give that a try.


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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."

nubcake

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	Re: LTFT not moving from 0% after clearing codes « Reply #4 on: May 01, 2016, 04:24:37 PM »

I'm not at all sure on this, but check for non-stock CLA*** (error class) changes. My assumption is that if you hide something relevant to fuel trims with those - it still won't adapt, even though no DTC is shown. Hope that makes sense. Never tested it myself and never looked closely into code, though - so take this with a grain of salt.


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