[Robb]

Don't remember doing it, but my maintenance book shows a new fuel filter a few thousand miles ago.

I would have changed it, believing it might have been the problem.

Did some more research on the net, found a man that had a similar problem that was cured when a mechanic changed his 02 sensors.
That was something I was going to try, but never did for cost. (at time, thought the truck had 1 02 sensor, couldnt afford to buy both).

As it has 82k, I will soon change the 02 sensors, timing belt (if it has one), and some other long term maintenance. Will post results, afterwards.

-Robb