1990 omni

I got all of the vacumm leaks fix she will start good when cold but as soon as she is warm I lose power and she trys to die. I unpluged the idle control motor and it wouldn't idle at all so I think it is working. When I took off the air cleaner it look like the injector was open all the way. Could the injector be stuck open? Or could it be the O2 sensor? The motor is the 2.2 Please can any one help I don't have a lot of money and can't put it in the shop.:banghead: