What causes the Buick GL8 to automatically shut off during idling warm-up?
1 Answers
Buick GL8 automatically shuts off during idling warm-up due to the following reasons: 1. Carbon deposits: Mostly caused by issues with the throttle body or idle speed control valve. Severe carbon buildup or component damage in the throttle body/idle speed control valve can trigger this fault, with insufficient air intake being the primary cause. 2. Fuel system: The throttle body and idle speed control valve in the intake system are the first components that need inspection. Additionally, the fuel system should also be considered, including whether the fuel pump is damaged, whether the fuel passages are clear, whether the fuel injectors are clogged, and whether the fuel pressure is normal, etc. 3. Spark plugs: The cause of this fault could also be related to spark plugs or ignition coils. Poor spark plug ignition quality or damaged ignition coils can be diagnosed through a spark test, but professional assistance is required. Do not attempt to resolve this issue on your own.