I washed my chevy s-10 today and the motor at one of them quater car washes where you do it your self. i washed the motor with the engine wash and then rinsed it down with regular water. when i was done i was on my way, i thought. I drove for about 1 min then i hear backfire i pull over and put it in N and gas it then the back fire put put motor shaking like crazy and then it dies. If i let it sit for a min or two then start it it runs fine at a idle for about 40 sec then the motor starts to shake like crazy. We ran the truck for a good hour of this problem start stop start stop and it still wont run normal..... Any ideas?