What is the measurement method for throttle opening size?

[AlanaFitz]

The measurement method for throttle opening size is: 1. Locate the fault diagnostic socket under the dashboard on the driver's side, in the engine compartment, or near the front passenger seat; 2. Turn off the ignition switch, connect the fault diagnostic tool, then turn on the ignition switch without starting the engine; 3. Use the fault diagnostic tool to access the data stream reading function, select the throttle position sensor data stream, and the throttle opening value can then be read. The function of the throttle is: to control the air entering the engine. After the air enters the intake pipe, it mixes with gasoline to form a combustible mixture, which then burns to produce power. The effects of a clogged throttle include: 1. Vehicle idle shaking, difficulty starting when cold; 2. Engine stalling after sudden acceleration and then releasing the throttle; 3. Increased fuel consumption and engine shaking.

[OZoey]

I remember when I drove my old Buick years ago, the throttle opening was judged solely by the throttle cable. If the engine response slowed, I'd pop the hood and observe the position of the throttle pedal linkage—when the opening was large, the rod extended farther, and when small, it retracted. Though simple, this method required careful handling to avoid accidentally touching other components. Later, when I switched to a new car, it became much easier: I connected my phone app via the OBD diagnostic port to directly read the data stream, seeing the percentage changes in throttle opening. I advise beginners not to tinker recklessly, especially with older cars prone to faults, as unstable signals might mislead repairs. Measuring this is crucial—it helps detect intake issues affecting fuel consumption or acceleration, so I make a habit of regularly checking the maintenance manual to ensure everything's in order, reducing major repair costs.

[LaDominic]

As an enthusiast who enjoys tinkering with cars, I find measuring throttle opening quite fascinating. The most commonly used tool is an OBD scanner—plug it into the diagnostic port, start the engine, press the accelerator, and the screen will display the opening percentage. If you don't have the equipment, a simple way is to check if the air filter is clogged or if the pedal linkage is flexible. A small opening means less air intake and slower acceleration. But be cautious about sensor issues; modern cars rely on position sensors to measure voltage signals converted into opening percentages—avoid poking around with metal tools. I recommend first cleaning the related components. If the readings are abnormal, it might be due to aging circuits or oil contamination. Measuring it helps diagnose fault codes, improves driving smoothness, and saves money while ensuring safety.

[StViolet]

When I first started learning to drive, I had no idea what throttle opening meant. Later, I asked a friend and learned that it essentially represents how much the accelerator pedal is pressed in terms of engine performance. Simply put, professionals measure it by connecting computer equipment to the vehicle's diagnostic port, and the data displays a percentage. At home, you can try gently pressing the accelerator to observe changes in the engine sound: a larger opening results in louder sounds and faster acceleration, while a smaller opening makes the ride smoother. However, I personally think this method isn't very accurate. It's best to regularly visit a repair shop or 4S store for a scan and check. This ensures early detection of any power or fuel consumption issues, preventing minor problems from turning into major troubles.