need help! FJ stoped running

[2T2]

Ok when we got back from the trip to Fairbanks my FJ started acting up.
we washed her down to get all the ice off and now it won't stay running.
it Idols fine but once you apply preshor to the accelorator it dies what do you think this is. I bought an OBD 1 to see what code it would read but there are none stored. the intack was completely clean. I checked the plugs wires and cap for water and cleaned all that off. but still running the same. please help me