How to clean the accelerator of Highlander

The main function of the throttle valve is to control the air intake according to the load of the engine. It is the only control valve for air to enter the engine and the throat of the car. Once the throttle is dirty, there will be weak acceleration, high fuel consumption and car shake. Therefore, it is also very important to maintain the throttle regularly.

First, the cleaning method

1. Before cleaning the throttle valve, turn off the ignition switch, remove the negative electrode of the battery, and then remove the throttle wire, air intake hose and the screw for fixing the throttle valve.

2. After removing the throttle, clean the throttle with carburetor cleaner, and wipe it with cotton thread if it cannot be cleaned.

3. After cleaning, install the upper throttle in the order of removing the throttle. Finally, you can try to see if the air intake of the cleaned throttle is smooth.

Second, the cleaning requirements

How often it is cleaned depends on many aspects. Such as the driving environment of the vehicle and the control mode of the EFI engine.

If the vehicle works in a polluted environment (mainly inhalable particles), impurities will accumulate on the throttle valve soon, which will affect the intake of the engine for a long time, so it needs to be cleaned. This phenomenon is most obvious when starting the vehicle.

Some Japanese engine control systems traditionally like to calculate fuel injection and ignition timing by measuring air flow. Therefore, the accuracy of air flow measurement is very strict. A slight blockage can also cause the engine to work abnormally. But for some American engines, if the air flow rate is not used as the calculation basis, there will be no such great response.

Therefore, different vehicles and different working environments will cause inconsistent engine throttle cleaning time. There is no regulation on how often to clean the throttle. If there is such a regulation, it is an abnormal regulation, indicating that the design of the car is flawed.

Third, specify

Any vehicle that needs to clean the accelerator frequently is a faulty vehicle. Some vehicles with electronic throttle can contact the maintenance station and make adjustments through ECU software upgrade. If the problem cannot be solved by repeatedly cleaning the throttle in the maintenance station, it is recommended to return the car (generally impossible) or change it.