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

[Aaron Kulkis]

Robert Meier wrote:
> OBD-II users,
>
> I know that we have some OBD-II enthusiasts and automotive experts.
>
> Due to intermittent misbehavior by my car,
> I've begun using an OBD-II modem and Palm Device to monitor my cars operation.
>
> 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?
>
> TIA,
>   
Bigger question... what exactly is the car doing that is
driving (heh!) you to monitor its behavior so obsessively?

Symptoms might be identifiable enough that OBD data actually
confuses the issue (due to lack of familiarity with what
OBD readings are normal and what they indicate).