99 Chevy Cavalier bogging down

stalling
gasoline
heating

#1

Help! I have a 99 Cavalier that bogs down in the heat. I have changed fuel filter and had the pump checked out. Any other ideas on what it could be? It does not send any signals out to the “brain” and if I keep the RPM’s up it does not do it as much, runs great in cooler weather.