13 What happened to modern Rena without algebra?

13 years Hyundai Rena has no algebra because of electronic throttle failure.

1. Check the carbon deposition of throttle body, idle valve, fuel injector and valve. If there is carbon deposit, clean it up first, and then observe it during trial operation.

2. Check whether the signals of each sensor are normal. Inaccurate sensor signal or poor actuator work will lead to unstable engine idle speed. For this kind of fault, a comprehensive inspection is needed.