Gas Pedal To The Floor No Power

Instead it is acting like a toy car with the batteries quickly expiring.
Gas pedal to the floor no power. Checked spark plugs still no. That evening got in my car to go get gas and go to the grocery store. I ve replaced the fuel filter spark plugs and wires head gasket and ran fuel injector. Check engine light starts blimking also.
Any advice will help. Like it just stays at same speed and when i just hold it down eventually it seems like power comes back. I changed out fuel pumps and that didnt work. Everything else is working great.
Runs great in the cold for about 2 mins then when it warms up it acts up. Rough idle and occasionally stalls because of it. The car started fine drove fine until i was almost out of my apts and the gas pedal went all the way to the floor and it felt like i wasn t getting. Hello i have 2000 mirage 1 5 engine i had a head job and my clutch set changed before my problem is when i start my car after being parked only for long hours i have to hold my gas pedal to the floor read more.
The heat is still running all the lights are on. After realizing the danger of having the gas pedal to the floor while facing a heavily traveled road i quickly try reverse with the same response. It will drive but not the power it had yesterday update. In fact it lags and sputters.
Sometimes when i push gas pedal seems like no power or gas getting to it. Parked in the open. Why when i push my gas pedal down to the floor my car harshly hesitates and gets no extra power. I have very slow acceleration with zero power.
I was riding and notice that i was losing some power. I drained the gas thinking it was bad gas. I prees my gas pedal down on the floor and there is hardly any power no powwer in any gears. It finally got to wear it wont go but like 10 mph.