Leaderboard

If your model is fuel injected then look at the AIC valve/servo motor that is located under the throttle body. My 2021 Hisun i.e. Axis 700 periodically does the same thing and the cause is the AIC sticking. The AIC has a small mushroom shaped piston that is internal threaded that opens and closes based on the input to the ECU. The symptom's you described are exactly what I have when it sticks. It did it again to me this last week. The fix for me is to remove it very carefully as it has some small part that can get lost rather easily and clean the carbon off the piston. This time I think I'm going to add a little grease to see if it stops sticking. I might even polish it up gently with buffing compound using a Dremel. I actually loosen the throttle body and turn it to get access to the thing.