What is the reason for unstable idle speed and stalling in MG HS?

1 Answers
LeStephen
07/30/25 7:06am
The reasons for unstable idle speed and stalling in MG HS are as follows: Low car battery voltage: Use a multimeter to test the battery voltage. If it is below 10V, replacement is recommended. If it is around 11V, it can be used temporarily, but preparation for replacement should be made. Above 12V is acceptable for use. Carbon deposits: Check if the issue is caused by carbon deposits; if the vehicle has run about 20,000 KM, focus on inspecting and cleaning the throttle. Spark plug problem: Inspect, test, and replace the spark plugs. Fuel supply system: Test and inspect components related to the starting and fuel supply system, such as the starter, fuel pump, and sensors.
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