1997 Toyota Rav4 4 cyl Four Wheel Drive Automatic 160000 miles

My daughter's car has been completely dying while she's going down the highway. This only happens once a week or so and then it takes about 20 minutes for her to restart it.

She took it to one local mechanic and he couldn't figure out what was wrong because it wouldn't die on him. Then she took it to the Toyota dealer and they said it was the idle air control valve. They said it was fixed, but 2 days after she picked it up from Toyota it did it again.

She will be driving on the highway and then loses all power. Then it will crank 20-30 minutes later and then the problem will come up another 4 days to a week later.

Does anyone know what this is? I called Toyota today, but since it's the weekend they are not opened. I am 500 miles away from my 18 year old daughter and I don't know how to handle this. Does Toyota get to keep my money since this wasn't the problem?

Any help will be greatly appreciated.

I would’ve suspected crank position sensor
and or fuel pump
but an idle air valve no

Need a tool or a tester CHECK IT @
http://www.2carpros.com/affiliate/uid/bmrfixit_1
need manual CHECK IT @
http://www.2carpros.com/kpages/auto_repair_manuals.htm