HELP! 98 Accord stops if u take foot off gas pedal

I need help really bad, really fast! I just had the tranny in my 98 accord rebuilt Friday. Ran fine all weekend and then this morning (Monday) I went to start it to go to work and it was running very odd - idling high then low - between 2 and 4 rpm like I was pressing on the gas and letting off the gas constantly. So I turned the car off to see if it would be better if I restarted it - no such luck! It wouldn't even start - it tried but wouldn't stay going unless you keep your foot on the gas pedal. The second you let off the gas pedal the car dies!!! I took it back to the transmission place to see if they left a vacuum hose off/loose, but they say that they can't find anything.....PLEASE HELP!!!!!!!

We need to have a little more information about your vehicle: mileage, maintenance history.

For starters check the conditions of spark plugs, wires, distributor cap.

Good luck,

Sam