here is my problem. I recently bought a used honda airwave 2007 model car which has cvt gearbox.

gears won't shift unless i press the accelerator so hard that rpm goes beyond 3000 to make a shift and comes backs to normal. at constant speed rpm going up and down continuously. sometimes when the rpm goes high D start blinking so i have to stop the engine and restart the car to get the D off. car is really annoying to drive and consume so much of fuel.