904 giving up the ghost?

CudaFactHackJob said

Even if the filter and extension weren't even installed, it wouldn't make a difference. If you are sure it was to the full mark....Drop the valve body and let's check out the pressure regulator valve or converter valve to make sure they're not sticking.

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Good to know I started thinking the same thing, the fluid level was well above the bottom of the throttle body anyway (at least 1/2" ABOVE the full mark) so like you say it shouldn't have made a difference.

I'll pull the valve body tonight or tomorrow, I spent most of the day working on my truck and it's finally back on the road so that's one less thing I need to worry about.