My Camry has been stalling as of late. I have taken it into Toyota who advise the car has no codes and cleaned the intake manafold. The car has a slight hesitation when driving above 3000 rpm. It then drops its RPM's at stops which leads to a stall. If I restart the problem goes away until again I drive above 3000 rpm. If at the time before stalling I put the car in neutral and rev it up, it idles fine. It also idles fine when I drive on a trip and keep my rpm ess than 3000.