I hope It could be as something as simple as this...About the algae and clogging though, It seems strange that this problem should happen now, after a month or so of daily driving. I have run biodiesel in this car, and was expecting filter problems from that, so I have the filters on hand already.

But if the filters were clogged, wouldn't it not start at all? The fact that I could get him to idle, but would lose it when dropping into gear is what stumped me. I am going to travel an hour down to where he died today, and change the inline filter along with the screw in....and see what happens....