What are the symptoms of a dirty car throttle?

[JohnnyDella]

The symptoms of a dirty car throttle include: 1. Engine shaking during idle; 2. Insufficient power while driving; 3. Increased fuel consumption; 4. Engine stalling; 5. Failure to meet emission standards. The causes of a dirty car throttle are: 1. Poor filtration by the air intake filter, combined with a dusty environment; 2. Low-quality engine oil with high evaporation rates; 3. Oil vapors and impurities from the crankcase. The throttle is a controllable valve that regulates air intake into the engine. After entering the intake pipe, the air mixes with gasoline to form a combustible mixture, which then burns to generate power. Its working principle involves controlling the engine's air intake, with the vehicle's computer determining the fuel injection amount based on readings from the air flow sensor.

[MacAlice]

I remember when I helped a friend fix their car before, we encountered a dirty throttle body issue with quite obvious symptoms. First, the engine idled roughly—like when stopped at a red light, the engine wobbled like a drunkard, and you could even feel the vibration through the steering wheel, which was really annoying. Next, there was a lack of power during acceleration—stepping on the gas pedal felt like dragging through mud, with the speed refusing to climb while fuel consumption kept rising sharply, especially making highway overtaking risky. Then, there was difficulty starting the car—it took several attempts to fire up, and it was worse in winter. Sometimes, black smoke or odd smells came from the exhaust, and the check engine light might turn on—all these signals reminded me to address the issue promptly. I recommend adding fuel system cleaner occasionally or getting the throttle body cleaned regularly at a shop. This can prevent severe engine damage and extend your beloved car's lifespan.

[Yvette]

As an average car owner, my old car once had a dirty throttle body, and the symptoms were quite troublesome. The car shook violently at idle, making it hard to even keep the stereo steady. Then, the acceleration response became super slow—stepping on the gas took several seconds before the car moved, and fuel consumption inexplicably increased by 15%. Starting the car also became problematic; I had to try multiple times in the morning. Looking back, a friend warned me this could easily lead to dangerous situations, like stalling in heavy traffic. So, I immediately bought cleaning tools online, did a simple DIY scrub, and fixed it for less than 50 bucks. If you experience car shaking or high fuel consumption, don’t ignore it—check the throttle body. It’s much cheaper than engine repairs.

[DiSavannah]

I place great emphasis on driving safety. The symptoms that worry me the most when the throttle is dirty are unstable idling and sluggish acceleration, which can directly lead to a high risk of vehicle loss of control. For example, engine surging or even stalling during sudden braking at intersections increases the likelihood of rear-end collisions. Additionally, a sudden surge in fuel consumption indicates potential faults. Prolonged neglect may damage the catalytic converter, causing repair costs to skyrocket. I recommend everyone to regularly monitor engine performance. If abnormal vibrations or changes in fuel consumption are noticed, immediately visit a professional shop for inspection and cleaning to ensure safer daily commutes.