Chang 'an Starlight 4500 cold car is not idle.

Fault of throttle body or idle motor, fault of engine management system.

1. According to the query of Pacific Auto Network, it is found that the throttle body or idle motor of Changan Starlight 4500 car is faulty, so it is necessary to check and clean the throttle body and idle motor, or replace the faulty parts.

2. The engine management system of Chang 'an Xingguang 4500 car is out of order and needs to be checked and repaired.