Help...my van is in a bad way right now. Let me start at the beginning. About two weeks ago I replaced the cap, rotor and coil. Everything thing has been just fine with an occasional bit of hesitation. Fast forward to today I was out driving everything was fine, I had just put $20 worth of Shell gas in it and about 20 minutes later I was driving and went to accelerate and the van lost all power and started to buck and then sounded like it was maybe running on 1 to 3 cylinders from the feel of it. I pulled off the roadway and tried to go up an almost non existent incline and the van couldn't do it, it just died. Right afterword i could get it running by keeping the throttle mashed to the floor and even then the engine would buck really hard. I tried shooting ether down the intake and the engine would turn over but it would die right back out. What can be wrong with this beast? I need her for work tomorrow so any help would be appreciated.
Oh yeah no SES light.