Lately it seems that my camry is running rich. Im not getting as good gas mileage as i used too, i feel a little lack of power under acceleration, and i notice sometimes when i let off the gas and shift ito neutral my car will idle at around 1800 rpm's!!, but if i tap the gas it will go back down to around 700 rpm's. Its wierd and im not totally sure if this is normal thats why im asking you guys. Would reseting the ecu fix this problem? Im not entirely sure so all the help you guys can give me would be greatly appreciated. thanks guys.