Why Does the Throttle Make a Squeaking Sound When Turned with the Key?
4 Answers
When turned with the key, the throttle makes a sound because it is resetting. Reasons for the throttle making noise: When turned with the key, the throttle makes a sound as part of its resetting action. After each shutdown, the throttle seeks its proper position, which is also part of the self-check process. Function of the throttle: It is a controllable valve that regulates air intake into the engine. The air mixes with gasoline in the intake pipe to form a combustible mixture, which burns to generate power. By accelerating or decelerating, it enhances the vehicle's power, enabling the car to move. Consequences of throttle malfunction: It can lead to incomplete sealing of the cylinders, leakage of the air-fuel mixture, insufficient cylinder pressure, difficulty in ignition, and incomplete combustion. If a malfunction occurs, it is recommended to have it repaired at a 4S shop.
A while ago, my car also made squeaking noises when starting. At first, I thought it was an issue with the key ignition, but later when my mechanic buddy checked it out, he said the throttle shaft was lacking lubrication. Turns out, the throttle is connected to the mechanical parts of the accelerator pedal, and with all the stop-and-go driving, dust had built up inside, drying out the lubricant and causing that weird grinding noise when turning. If not addressed in time, the shaft could seize up, leading to sluggish throttle response and higher fuel consumption. I tried disassembling the throttle myself, cleaning off the grime with gasoline, and applying some grease for lubrication—sure enough, it became much quieter. Just a heads-up though: remember to disconnect the battery before working on it—safety first. Regularly maintaining and checking these small areas can save a lot of trouble, or else it might feel like the car is constantly complaining about something when driving.
As a seasoned driver with decades of experience, I've encountered countless cases of car squeaking. When the throttle squeaks, it's often due to worn connecting rods or bearings. Mechanical components accumulate dust and grime over prolonged operation, causing noise when force is transmitted upon turning the ignition key. In severe cases, the accelerator may become stiff and acceleration sluggish. I recommend trying some WD-40 lubricant spray first. If the noise persists, visit a professional shop for part replacement. During regular car washes, prevent debris from entering the air intake to avoid minor issues escalating. Cars, like people, require timely maintenance for longevity and peace of mind.
When the car key is used to start the engine, it makes a squeaking sound. After consulting the manual, it's mostly due to mechanical friction related to the throttle. The lack of lubrication in the bushings or worn-out rubber seals causes rotational noise. Air leakage issues can also amplify the sound. Simply spraying lubricant can provide temporary relief, but the long-term solution involves cleaning or replacing the worn components. Poor maintenance can affect engine responsiveness, so it's best to address the issue promptly.
