What Causes a Buick Regal to Suddenly Stall While Driving?

[EleanorLynn]

Buick Regal suddenly stalls while driving for the following reasons: 1. Use of inferior fuel: The use of low-quality fuel leads to engine carbon buildup and stalling. 2. Engine computer failure: Once the engine computer fails, it can cause the car to stall, which is a control issue. 3. Insufficient driving skills: The driver's lack of proficiency or improper operation can also cause the car to stall. 4. Simultaneous multi-cylinder failure: It may be due to spark plug or ignition coil failure, causing one or more cylinders to misfire, leading to stalling. However, only simultaneous multi-cylinder failure can cause stalling, so this possibility exists but is not very high. 5. Engine self-failure: Damage to the engine idle control valve or its circuit, or issues with the idle control module in the engine's electronic control unit. The likelihood of engine self-failure is extremely high among the many causes of car stalling. 6. Fuel pump failure: A stuck fuel pump or the fuel pump itself failing can cause sudden fuel cutoff, which easily leads to car stalling.

[AuroraMarie]

I've repaired quite a few Buick Regals, and sudden engine stalling while driving is most commonly caused by fuel pump issues. When the fuel pump fails and pressure drops, the engine stalls—this is especially common in older vehicles. Ignition system failures can also be the culprit, such as worn spark plugs or aging coils, which prevent proper combustion. Additionally, a weak alternator or depleted battery can lead to stalling. Faulty sensors like the crankshaft position sensor can cause the car to lose track of the engine's position. Safety first—if this happens, pull over immediately and turn on hazard lights. It's best to check the fuel pump and electrical connections; regular maintenance can prevent such problems. I recommend visiting a professional shop for diagnostic tools rather than attempting DIY fixes.

[DeEverly]

My Buick Regal has stalled while driving before, which was quite scary! It turned out to be a clogged fuel filter preventing fuel from entering. Similar causes include loose wiring connections, spark plug carbon buildup, or an aging battery. If you experience a stall, quickly pull over to the side and avoid forcing a restart to prevent damaging more components. Always use good quality fuel and don’t wait until the tank is almost empty to refuel, as the fuel pump can overheat. After learning this lesson, I now inspect the fuel system every six months. Small maintenance details are crucial—they can save you from costly repairs and dangerous situations. Safety is the top priority after a stall; don’t linger in the middle of the road.

[JesseLee]

Stalling while driving a Buick Regal? It's likely an ignition issue, such as weak spark plugs or shorted high-voltage wires. A weak battery can also cause sudden power loss—check the voltage promptly. Dirty sensors like the mass airflow sensor might trigger false stalling signals. If an incident occurs, coast to the roadside, turn on hazard lights, and avoid pushing the car. Regular spark plug replacements and battery terminal checks during maintenance can prevent major issues. Sudden stalling while driving is hazardous—prompt repairs ensure safety.