So as I mentioned in my build thread, my truck is now facing a engine problem. I'm not too sure what the problem is, but it seems like it's not getting fuel for some reason when I either accelerate from a stop, and sometimes when I switch gears. It is the strangest problem because it only happens sometimes, and it has popped up in the last three days. Also, the transmission has started acting strange as well. It will let the revs get really high before it downshifts. It's never done this before. Has anyone else had this problem?

 

This is a 4.2 V6 by the way

 

TPS? I know they can affect transmission shifting. Just my .02.