Why does the Sail not accelerate when stepping on the gas pedal?

[MelanieRose]

Possible reasons include CVT steel belt slippage, transmission oil pump failure, or internal transmission friction plate slippage. 1. CVT steel belt slippage: Slippage is one of the most common faults in automatic transmissions. Although automatic transmission slippage is often accompanied by severe wear or even burning of clutch or brake friction plates, simply replacing the worn friction plates without identifying the root cause of slippage will result in the transmission slipping again after a period of use. 2. Automatic transmission disassembly inspection: First check the main oil circuit pressure of the automatic transmission to determine the cause of slippage. If the automatic transmission slips in both forward and reverse gears, the cause is often low main oil circuit pressure. If the main oil circuit pressure is normal, only the worn or burned friction components need to be replaced. If the main oil circuit pressure is abnormal, during the transmission repair process, the oil pump or valve body should be inspected and repaired accordingly based on the main oil circuit pressure, and all transmission seals and gaskets should be replaced.

[LaRiver]

I also encountered the embarrassing situation of no response when stepping on the accelerator when I drove a Sail before. It might be due to a faulty fuel pump failing to supply fuel, just like a clogged faucet preventing water from coming out. Or it could be a dirty air filter causing poor air intake and weak engine performance. If the throttle body has too much carbon buildup, the throttle response will be sluggish. When you step on the accelerator but can't gain speed, it's best to first check the filter and fuel lines—simply replacing a part might solve the issue. If that still doesn't work, it could be due to a slipping transmission clutch or an electronic control unit malfunction. Don't force it; find a reliable auto repair shop to diagnose the problem—safety first. Regular maintenance and carbon cleaning can save you from unnecessary troubles.