What Causes the Sizzling Sound When Pressing the Accelerator in an Automatic Transmission?

[MilesLee]

The reasons for the sizzling sound when pressing the accelerator in an automatic transmission: 1. Noise from the fuel pump or related components; 2. Damage to the clutch release bearing. If the abnormal sound comes from the clutch area, pay attention to the wear condition of the clutch. Try pressing the accelerator—if the car runs normally but does not accelerate, it is a clear sign of slipping, which may indicate that the clutch disc has worn thin. If there is a rustling sound, the clutch release bearing may already be damaged; 3. The engine belt has become loose. A slipping belt will produce a sizzling sound, leading to friction and high temperatures that cause the belt to stretch further, worsening the slipping and creating a vicious cycle. It is recommended to visit a repair shop to adjust or replace the belt.

[DeJack]

I've been driving for over a decade and encountered the issue of a buzzing sound when stepping on the automatic transmission accelerator a few times. It's usually not a big problem, but it's best to check it out as soon as possible to avoid turning it into a bigger issue. The most common cause is friction in the throttle cable area, which tends to happen when it's not lubricated for a long time. Another possibility is an air leak in the intake system, such as a loose air filter box or aged piping, which can cause a buzzing sound as air escapes. Also, check the alternator belt—if it's loose or worn, it can produce noise. If I encounter this issue, I first stop and take a quick look at the belt and piping for obvious problems. If nothing stands out, I take it to a mechanic to have them test it with proper tools. Additionally, malfunctioning components related to the automatic transmission, such as issues with the torque converter, can also cause noise, though this is less common. In short, regular checks can save a lot of hassle.

[StTheo]

My previous automatic SUV had the same issue, squeaking every time I stepped on the gas – drove me nuts. Turned out it was just a loose exhaust pipe connection leaking air, easily fixed by tightening it. Sometimes an aging belt is the culprit too; I replaced one myself once, didn’t cost much. I’d suggest checking the intake tract and electrical connections ASAP – loose wires or gaps can trigger noises. I recommend regular maintenance, like inspecting belts and hoses every 5,000 km to nip small issues in the bud. Also, don’t ignore service intervals; overusing AC or highway driving can accelerate part wear. Bottom line: no need to panic, most cases are minor. If you’re handy, DIY fixes work too.

[DeAaron]

The automatic transmission makes a buzzing sound when stepping on the accelerator, which I suspect is mostly related to the drivetrain. It could be friction noise from insufficient belt tension or air intake pipe pressure relief—need to carefully identify the sound source location. Poor electrical connections can sometimes cause buzzing too; check the generator-related wiring. Don't handle it carelessly, as persistent noise may damage other components and affect driving safety. Recommend pulling over immediately to troubleshoot, or seek professional repair if necessary.