Have you checked all fuses, if a wire touchedgrounded
metal you hopfully only blew a fuse and didn't really
hurt anthing.

 

I am thinking a 12V power wire from a stereo install touched the metal TB
thats insulated from ground by the plastic intake it is bolted tobut it is
grounded thru the wiring harness and the small 18-22 guage ground wire
blew like a really long fusable link? But from the very brief description of
what happened and whats now wrong between a few different posts,
I really dont know and I am just guessing. A VOM could easily confirm this.

Yes as the grounds for the sensors and such terminate
at the PCM. Thats why you disconnect the battery
before fiddling with any wiring.
http://iihs.net/fsm/?dir=40&viewfile...20-%204.0L.pdf
A VOM could easily confirm this.

 

If he back fed 12v thru a circuit alot of bad things
could happen, even cooking the PCM, always disconnect
battery first when working with bare wires.