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Please help confirm this fuel trim/MAF diagnosis...

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Old 10-25-2007, 07:15 PM
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Default Please help confirm this fuel trim/MAF diagnosis...

As explained in my original thread earlier today (see link below) I have been running a lean part throttle fuel trim of approx +19%. As a diagnostic test, I cleared the codes (zeroing out the learned trim values) unplugged the MAF and drove around for maybe 6-7 miles doing errands and such without the MAF's data influencing things... the car felt fine.

When I returned home, a quick check with Vag-com showed fuel trim without the MAF in the equation as -1.6%. I'm thinking this pretty much indicts the MAF. Do y'all agree?

~john<ul><li><a href="https://forums.audiworld.com/tt/msgs/1695988.phtml">&lt; original thread and MAF question &gt;</a></li></ul>
Old 10-25-2007, 07:16 PM
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bad MAF
Old 10-25-2007, 07:28 PM
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Yup!
Old 10-26-2007, 05:42 PM
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Default MAF changed to remanufactured one from VW dealer... all running fine now.

thanks!
Old 10-26-2007, 05:57 PM
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Happyy ending....:-)
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