I have a 2016 GAC GA6 luxury edition, and suddenly the idle went up to 2000 RPM. I replaced the throttle, ignition coil, and spark plugs, and cleaned the fuel injectors, but it didn't help. There's no fault light, but when I unplug the intake pressure sensor, the RPM goes back to normal, although the engine shakes. I replaced the intake pressure sensor with a new one, but it's still the same.
