Chang 'an Star SC6350C has no idle speed.

Clean the throttle valve, idle motor and sensor on the intake pipe, and clean the intake pipe. Check the cable plug during installation and install the original car computer. The plug is firmly connected, not necessarily because of the computer, but it is still relatively durable.

If it doesn't work, remove the idle motor, don't take off the plug, plug the hole where the idle motor is installed with a clean cloth, and plug it again when the idle speed is high. If it is stable, it means that there is something wrong with the idle motor or the computer control.