What is the reason for severe shaking after cleaning the throttle body?

[ElenaDella]

The reason for severe shaking after cleaning the throttle body is: failure to perform data matching. After cleaning the throttle body, it is necessary to reset the computer or disconnect the negative terminal of the battery to allow the computer to reset the throttle body. The steps for cleaning the throttle body are: 1. Open the hood and locate the engine's throttle body; 2. Use a flat-head screwdriver to remove the air filter and intake pipe, then unplug the electrical socket on the throttle body; 3. After removing the screws, take off the throttle body and use a dry cloth to block the engine intake to prevent dirt from entering the engine; 4. Spray the throttle body with cleaner. The throttle body is a controllable valve that regulates air entering the engine. Its function is to control the air entering the engine, where it mixes with gasoline to form a combustible mixture, which then burns to generate power.

[MacValerie]

After cleaning the throttle body, I once experienced severe shaking issues. The mechanic later explained that the main cause might be improper throttle body reset. After cleaning, the position sensor signal changed, and the engine ECU couldn't recognize the new state, leading to incorrect throttle opening and air-fuel ratio imbalance. Another possibility was cleaning agent residue affecting sensor readings or improper operation damaging the valve. It took me half a day to figure out, but a quick diagnostic tool recalibration at the shop fixed it. Another common factor is intake leaks or loose hoses causing uneven airflow-induced shaking. Also, check spark plugs and fuel injectors—if dirty, they can worsen the problem. After routine maintenance, always let the car run for a few minutes to allow ECU adaptation, preventing similar issues.

[SanJayce]

Severe shaking after cleaning the throttle body often involves several technical points. After throttle cleaning, the ECU needs to relearn the idle opening value. Failure to reset it promptly can lead to control signal deviation. Residual cleaning fluid may clog sensors, and air intake system leaks or poor sealing can worsen the problem. Through my research on car DIY, I found that idle motor sticking or position sensor damage are also contributing factors. It is recommended to first check the fault codes and use an OBD tool to reset the learning parameters. At the same time, verify the condition of the idle control valve and intake manifold connections to prevent potential risks. A simple method is to start the car and accelerate slowly for a few minutes to allow the electronic system to self-calibrate. Regular maintenance can reduce such abnormalities.

[OGrace]

Severe shaking after cleaning the throttle body, I've dealt with it multiple times. The core issue is not performing throttle body reset, causing the ECU to fail updating data and resulting in incorrect position signals. Air intake leaks are also common; check if hoses are loose or damaged. Dirty spark plugs can exacerbate the shaking—replace them if necessary. Don't delay, just reset and match it to avoid engine damage. A thorough cleaning without residue during maintenance can save trouble.