good day I have a polo playa 1.4i 1999 that is drinking like a v8 18 liters 90km

I have done the petrol pump water temp sensor plugs cap rotor oil all filters new cam belt I had it plugged in show only intake temp sensor when clear it stays clear when I unplug the map the car dies I replaced the fuel line as well thinking that there was a leak the car does not pull like a 1.4 anyone that can help me plz