Bad TRIMS after Wideband CONVERSION...please help!

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Topic: Bad TRIMS after Wideband CONVERSION...please help! (Read 14851 times)

player

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	Re: Bad TRIMS after Wideband CONVERSION...please help! « Reply #15 on: August 02, 2013, 06:38:15 PM »

@IamwhoIam Yes...100% positive no boost\vacuum leaks...i went to AUDI SERVICE and they double checked...

@Carsinc :still don't get it why bad trims even with maf unplugged..btw: i have this maf:06a 906 461C (0280218023) ...i need the AUM/AUQ one?06a 906 461L Huh

can it be a faulty new 02 sensor?....cause i told you...block 033 (pre-cat o2 sensor) ...only fluctuates for 3-4 sec -1.6/1.2/-1.2/1.3 after i reset the trims.and after a few seconds it goes between 18% - 22% and stays there...

THANKS ALL FOR CONTRIBUTING!


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userpike

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	Re: Bad TRIMS after Wideband CONVERSION...please help! « Reply #16 on: August 04, 2013, 08:58:43 PM »

Quote from: player on August 02, 2013, 06:38:15 PM

Are you certain your fuel pump isn't weak or the FPR malfuntioning?


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vagenwerk

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	Re: Bad TRIMS after Wideband CONVERSION...please help! « Reply #17 on: August 05, 2013, 03:10:54 AM »

unplug maf , then reset fuel trims to 0% , and check short term fuel trim idle and during ride


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player

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	Re: Bad TRIMS after Wideband CONVERSION...please help! « Reply #18 on: August 05, 2013, 01:40:28 PM »

@userpike fpr and fuel pump was checked:(...

@ gregor10 ...7.9 % and...25%


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player

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	Re: Bad TRIMS after Wideband CONVERSION...please help! « Reply #19 on: August 05, 2013, 01:42:39 PM »

p.s: has anyone checked the logs...?

thanks!


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vagenwerk

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	Re: Bad TRIMS after Wideband CONVERSION...please help! « Reply #20 on: August 05, 2013, 03:25:33 PM »

yes i do.
check fuel pressure, you could also do test - unplug vacum from fpr - fuel pressure regulator on idle, injection time should decrease and short term fuel trim should go to minus , if not , probably fuel pump is dead, but check fuel pressure during ride you should read 3bar+ boost = 3.7bar fuel pressure on the rail should be during wot on 3 gear , and about 3.6bar@6000rpm


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