that is too weird...its amazing that you were able to figure that one out.
Rascal
On Mon, Jun 23, 2008 at 3:52 PM, Bernd D. Ratsch <bernd@dodgetrucks.org> wrote:
>
> After some extensive data-logging, found the problem. The TQ Converter
> wasn't completely engaging in Lock-up mode - causing a very mild shudder
> that only presented itself at 40mph/1200rpm. It was approximately a 30rpm
> fluctuation in turbine speed which caused the crankshaft rotation to "freak
> out" when in that range (actually found the engine RPM dropping down to
> 300rpm - reported by the crank sensor - causing the P0300).
>
> So...replaced the TQ converter and no more misfire code.
>
> For those who don't know what a "MisFire" means: It's an unexpected change
> in crankshaft rotation - anything that changes the crankshaft rotation can
> cause a misfire code. It's not just related to the spark plugs or ignition
> coil(s).
>
> - Bernd
>
>
>
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