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Engine Diagnostics , Alarm, and Fuel Injection Issues Tips on Engine Diagnostics, how to get codes, and what they mean.


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Old 08-26-2009, 09:52 PM
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EZ48 EZ48 is offline
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Default Resetting AFV

I have a PC3 installed and think my AFV values may be incorrect and I'd like to reset them to zero. I've heard the following methods but wanted to verify that they'd work before I go about it.

1. Disconnect battery overnight. Supposedly this will cause ECM to lose all stored values and thus be reset to zero.

2. Remove PC3, reinstall factory AC and reconnect 02 sensors then ride for about 30 minutes. Obviously more work here than option 1 but doable.

3. Have an HD dealer reset them. I'd like to avoid paying $85 if possible.

Any help appreciated.

Thanks.
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Old 08-27-2009, 06:08 PM
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Disconnect the battery, booth pos and neg , run a jumper between the two cables for 10 minutes, this will kill any bad habits the ecm has learned.
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2009, afv, alarm, harley, hd, reset, resetting


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