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Old 08-11-2010, 10:20 PM   #1
Y_I_K_E_S
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Join Date: Sep 2007
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Location: Knoxville, TN
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2005 WRX STi
"Ali"

Default HELP!! Car won't get out of learning mode

I'm prepping my car for a supercharger and had to relocate the ABS pump for clearance. Now the stock air box won't fit anymore so I have to run an SRI for the next couple months. I know it's far from ideal but i have to live with it for now.

I've logged it a few times and rescaled the MAF sensor just like I did with the hybrid intake but the car won't get out of learning mode. The fueling seems fine but there is a ton of MAFv variance (and correction) at low load areas like idle that I can't seem to tune out. I'm guessing this is the problem but I want another opinion.

Does anyone have any suggestions? Always having to ride the throttle to keep it idling at stop lights is driving me crazy.
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Old 08-12-2010, 08:26 PM   #2
RaceFaceXC
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how long since the last reflash? Did you allow it to idle for 10 mins after reflash? The ECU never stops learning, what are your trims for your CL load areas?
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Old 08-12-2010, 10:48 PM   #3
Y_I_K_E_S
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"Ali"

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The battery cable came loose on me which cleared out the ECU. That was over a week ago... maybe 200 miles. No, I didn't let it idle afterward. I'll log fuel trims on the way home from work tomorrow and see what its doing.
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Old 08-13-2010, 11:54 PM   #4
andrewm
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Check your grounds, a poor ground can cause a variance like this. Seems silly, but it's really easy to check. Start easy then work hard.
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Old 08-14-2010, 03:29 PM   #5
Y_I_K_E_S
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Well I re-tightened the battery cables (It is relocated to the trunk) and logged my fuel trims. Last time I logged it, right before the cables came off, they were around 6-7%... They had crept up to 16% on me. I remapped it and now she's running fine.

Chalk one up to not paying as much attention as I should have.

Thanks for the help guys.
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