bad fuel consumption,can't find the problem

[CMF_staniu]

hello.i have a micra k11 1,0 from 1996.at first,my mileage was pretty god,but now,it eats around 12l/100km.i have resolder my throttle body,i have cleam my aaac valve,i have reposition my tps exactly how it supose to be.after all this,my car eats around 10L/100km.still,alout.anyone have any ideea on what should i do next? bdw my o2 sens works just fine.i really apreciate.(sorry for the mistakes in the text,english is not my first language)

 

[CMF_frank2]

coolant temp sensor maybe staniu ?

 

[CMF_mipcar]

Welcome Staniu.. Check simple things first. Tyre pressures, brakes not dragging, clean spark plugs. Clean airfilter.

Does the car still drive well? Easy to start? Idles smoothly?

 

[CMF_staniu]

i have changed the air filter.fuel filter,my sparks and brand new (nkg bkr5e) my tyre pressure is 2.2, 2.3 bar.today i'm gonna check my coolant temp and i will try to pull out the codes from the ecu,but,i'm not really sure how.any ideas?