idling problems

[wheres_da_cheese]

I washed my car's engine on saturday night and when i drove it home it seemed fine. But when i tried to start it on sunday morning it shook really bad and idled low. It would also drive weird. The way that it is driving weird is that it idles really low and when im driving it seems that it doesnt respond right. When im just steadily accelerating it seems like it will accelerate a little then a lot and then a little. thats how my idling situation is also, i can be idling from 1100rpm-500 and bouncing back and forth maybe 10 times in a minute. whats the deal? i think that i might have shorted something... How can i fix this? I had a post previously about this relating to my oil leak, but its not related to my oil in any way, i have been assured that by many