What are the reasons for the frequent stalling of the Buick Excelle GT automatic transmission?
2 Answers
Here are the reasons for the frequent stalling of the Buick Excelle GT automatic transmission: Stalling caused by carbon deposits: Carbon deposits usually accumulate in the throttle, spark plugs, cylinders, fuel lines, intake ducts, etc. They are a kind of coking substance produced by fuel under high temperature. General physical methods are difficult to remove, and special chemical cleaners are required for cleaning. Fuel quality and injector clogging: This situation is also relatively common. Using low-quality fuel not only produces more carbon deposits but may also clog the injectors, resulting in poor atomization. Additionally, low-quality fuel directly affects combustion efficiency, increasing fuel consumption. Unburned carbon monoxide entering the car and accumulating may even lead to poisoning and death. Ignition system issues: Common faults include spark plug carbon deposits and insufficient ignition voltage. The former can be addressed by using both physical and chemical methods to remove carbon deposits, while the latter can be resolved by replacing the spark plugs to address the insufficient voltage problem. Power supply issues: If the battery is severely depleted, it will make the engine difficult or even impossible to start. Generally, its service life is about 4 years. A nearly exhausted battery can be replaced, but repair is generally not recommended because the repaired battery has a short lifespan and is less reliable.
Why does the Buick Excelle GT automatic keep stalling? My family's car had the same issue, and there were quite a few problems. The most common reason is the fuel pump not supplying enough fuel, possibly due to clogged fuel lines or a dirty fuel filter that needs cleaning or replacement. Additionally, worn-out spark plugs can cause ignition failure, especially after driving 100,000 kilometers, leading to stalling. When I was repairing the car, I also found that a faulty crankshaft position sensor can cause unstable engine RPMs, resulting in automatic stalling at low speeds. Another issue could be unstable battery voltage, possibly due to a broken alternator not charging the battery, causing the car to stall immediately after starting. Remember to perform regular maintenance—don't wait for major problems. Take it to a specialized repair shop for a thorough check.
