What does the trim pot on front of OBC do?

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cros
E30 Zone Regular
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Joined: Sun Jan 09, 2005 11:00 pm

Post Mon Feb 21, 2005 2:42 pm

Any idea what the trim pot behind the plug next to the 1000 button is for?

I thought it was for range adjustment (distance possible on a full tank).

Seems to have no effect though.
Demlotcrew
E30 Zone Team Member
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Location: East Anglia

Post Mon Feb 21, 2005 2:50 pm

its to adjust the fuel level in the tank. If you press 1000 and 10 at the same time it will show you the level of fuel in the tank in L.

andrew
cros
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E30 Zone Regular
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Joined: Sun Jan 09, 2005 11:00 pm

Post Mon Feb 21, 2005 3:12 pm

Tried the 1000 + 1 thing. Never worked before. Thought I had an odd OBC. Just realised the engine must be running for it to work :D

Trim pot still has no effect though. Full tank on a slight incline and it's reading 45l (I know I have the wrong coding plug). Is the effect of turing the pot supposed to be real-time? I even tried restarting the engine at both extremes and neither the range or amount of fuel changed.

Off topic, but is a chrome bumpered 4 door 325 with OBC & sport seats (ie not base spec) likely to have had a 62l tank?
Karan
Married to the E30 Zone
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Location: Cheshunt, Hertfordshire

Post Mon Feb 21, 2005 3:25 pm

would this explain why the range function on my obc is utter crap, cos it starts showing 22mls from anything below 1/4 tank

do i need to adjust the trim to 62 when i fill her up nxt time then??

cheers
Karan