What Causes Frequent Engine Stalling?

[StLeila]

Causes of frequent engine stalling in vehicles are as follows: 1. Poor fuel quality: The use of low-quality fuel (many gas stations sell impure fuel for excessive profits) leads to engine carbon buildup and stalling. 2. Fuel system damage: Issues in the fuel system, 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, can also cause the car to stall. 3. Improper operation: Insufficient driving skills. A driver's lack of proficiency in driving techniques or improper operation can also lead to car stalling. 4. Spark plug failure: It may be due to spark plug or ignition coil failure, causing one or more cylinders to misfire, resulting in stalling. However, stalling only occurs when multiple cylinders fail to ignite simultaneously, so this is possible but not highly likely.

[LaNadia]

Driving for long periods often leads to frequent engine stalling while running, which is quite a headache. I've experienced it several times myself, with various causes: old or improperly installed spark plugs leading to poor ignition and failure to start the engine; fuel system issues like insufficient fuel pump pressure or a clogged fuel filter, starving the engine of fuel; sensors such as a dirty air-fuel ratio sensor causing the computer to miscalculate the air-fuel mixture, making it either too rich or too lean; a stuck or faulty idle control valve causing the car to stall at red lights; and vacuum leaks letting air sneak in and disrupt the combustion balance, which is also a common issue. Not fixing it promptly not only leads to more frequent stalling but also increases fuel consumption and can even damage the engine. It's advisable to first check simple components like spark plugs and fuel lines for blockages, then visit a professional shop for a computer diagnosis to check if the sensors are functioning properly.

[VonTucker]

My buddy was chatting while fixing his car, and it's really annoying when the car keeps stalling! The main issues include worn-out spark plugs with poor ignition performance, especially difficult starts in winter; a weak fuel pump causing insufficient fuel supply and the car stalling when running; problems with the air-fuel ratio sensor, like carbon buildup on the O2 sensor leading to incorrect fuel calculations by the computer; faulty idle control components making the engine unstable when stopped at traffic lights; and air leaks from broken pipes sucking in impurities and messing up the air-fuel mixture. The mechanic suggested not to delay and try replacing the spark plugs first. If it still stalls, check the fuel pump pressure. This problem is unsafe—stalling while driving can cause accidents.

[VanElla]

Driving for decades, frequent engine stalling is often caused by minor issues: old spark plugs reaching the end of their lifespan and failing to ignite; low fuel pump pressure preventing fuel delivery; faulty air-fuel ratio sensors like a dirty MAF disrupting the mixture ratio; unstable idling commonly causing stalls when parked; vacuum leaks allowing air into the combustion chamber. Regular maintenance can prevent these—replace spark plugs and clean fuel injectors.