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Re: Fuel delivery/OBC question.... (archive)
[ Follow Ups ] [ 7-series (E23) Message Board ] [ Msg. Board FAQ ]
Posted by Scottie 85_535i 84_745i San Jose CA on December 09, 2001 at 02:37:14:

In Reply to: Fuel delivery/OBC question.... posted by James '82 733i on December 08, 2001 at 20:18:48:

The OBC II MPG reading is reset simply by pressing the reset button. You don't need to unhook anything or disconnect the power. The OBC is fully adjustable and is not very accurate. To adjust it, remove the small cover on the lower left that looks like it has a pin hole in it. Behind this cover is a pot that you can fiddle with to get more accurate readings. It takes a long time (highway driving) to get it to read correctly. Turn it only a little bit at a time.
Scottie

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