[mdlug-discuss] [TECH SUPPORT REQ] OBD-II typical readings

[Drew]

On 9/24/07, Robert Meier <eaglecoach at wwnet.com> wrote:
> OBD-II users,
>Unfortunately, I cannot yet recognize anomalous behavior.
>
> Does anyone have any familiarity with normal OBD-II readings?
>
> Are long and short time fuel trim normally rich (~-13% +/- 7%)?
> Is calculated load normally ~33% in reverse with brake on?
> Is calculated load normally ~20% in park?
>

I don't know about the load.

My Fuel Trim readings start out in that range, but promptly level out
to within a couple of 128ths from stoich, sometimes going slightly
lean.

BTW: I've still to get any official word on what to do with these
numbers when calculating fuel flow rate. There are *two* short term
and *two* long term fuel trim numbers. Last test, I used about 8% more
fuel than my software tallied up.

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- Drew.