My wife and I were riding trails near Stevens Pass today in the driving rain. Went through 3 or 4 large water pits. The fourth was deeper, just 2 inches from the top of the tires and the engine just stopped at once, in the middle. Would not restart, the starter would engage but would not crank over the engine. We took off our shoes, socks and pants and climbed out into the thigh deep freezing water and walked until we could get a lift 15 miles into town. The tow bill was $368.90, and the truck is in a parking lot. I want to go back tomorrow and get it.
Any advice about how to start it, anything I need to do to the truck before running it, etc? Did I ruin it? Please help!
By the way, my wife told me not to go into that last pit...
Thanks
Mark

It sounds like you might have hydro locked the motor (cylinders full of water, pull the plugs and see if it will turn over, and hope that you didn`t bend a rod. if it does turn over with the plugs removed then let it crank over for a few seconds to clear the water out, put the plugs back in and if your lucky it will start.

get it towed home
drain the oil & change filter
drain the transmission and tcase. refill with 30w to 50w oil (the cheap stuff)
remove the coil wire, ground the coil to the body (prevents a shocking experience and/or fires)
remove spark plugs
crank starter until all water is out
heavily spray wd40 in all cylinders
crank again
install plugs
refill with cheap oil (10w something)
replace coil wire
make sure all fluids are up
raise rear off ground
start motor
let idle for until warmed up
shut off
change oil and filter
repeat last 4 steps until all water is out. last change should be a high quality oil in the spec given in your FSM.

drain diffs
refill diffs
start and drive the motor about 2 miles
drain trans and tcase. refill as per your FSM
check the diffs for any remaining water in them

in addition you may want to:
remove the distributor cap and wd40 that too (let dry then reinstall the cap).
pray to the toyota gods you didn't bend a rod and/or shatter a piston.

yeh what wr said.

change the oil filter each time also.

oh and take the air intake stuff apart and dump the water out of it also.

ps I hope that it was clean water and not muddy or full of sand.