What is the method for cleaning a car throttle body?
2 Answers
Method for cleaning a car throttle body: 1. Remove the intake bellows at the front end of the throttle body; 2. Turn on the car ignition switch without starting the engine, press the accelerator pedal to operate the throttle cable, placing the throttle body in the fully open position; 3. After matching the throttle body, restart the engine and let it idle for 3 to 5 minutes, then perform rapid acceleration 2 to 3 times, keeping the maximum speed at 3000 RPM per second. The throttle body is used to control the intake air volume. The accelerator pedal actually controls the opening degree of the throttle body, and the control unit adjusts the fuel injection amount based on the throttle opening and opening rate. When the throttle body becomes dirty, its efficiency decreases, and the opening angle increases. The control unit will make certain adjustments and matches. Under normal conditions, the adaptive adjustment value for idle speed is 1.
Last time I cleaned the throttle body myself and it was quite a hassle. First, I had to disconnect the negative terminal of the battery to avoid short-circuit risks. After locating the throttle body, I carefully removed the intake pipe to avoid breaking the clips. I sprayed WD-40 on the screws to prevent stripping before slowly removing them. The key part was spraying dedicated cleaner on both sides of the throttle plate and gently scrubbing off stubborn dirt with a soft brush, paying special attention to carbon buildup around the valve edges. After wiping it clean, I let it dry for five minutes before reassembly to avoid damaging the seals with residual cleaner. It took two days of driving after reassembly before the idle speed returned to normal. Actually, new cars don't need frequent cleaning - once every 30,000 kilometers is sufficient.
