Failure in Cavalier 95 when heating

Good I have a Cavalier 95 Synchronous Motor 2.2 grated lid I have a problem my car in the morning advances well but as it goes up the Tenperature (85 90) degrees loses strength as if drowning already puts the new coils the new parties. I mean at noon more than everything I want to know if there is a possibility that the fault C finds in the Mescla between air and gasoline, please who can answer I thank you and thank you something else that model uses oxygen sensor because there are 2 types of engines 2.2 grated lid and another liza cover and being