I'm not an expert, but have been reading these posts alot.
Make sure you look under "Montana" in addition to transport. You might even consider posting there. There is a connector under the driver's seat that gets corroded. You might want to inspect it.
http://www.automotiveforums.com/vbul...d.php?t=980423
The rev of the engine RPMs is strange. I wonder if it has to do with your fuel pump. The fuel level sending unit and fuel pump are one assembly. Do you think your fuel pump is kicking on high and cranking up your fuel pressure?