What is the reason for high RPM but no speed increase in Haval?
3 Answers
Haval high RPM but no speed increase is caused by automatic transmission slipping. Automatic transmission slipping: Automatic transmission slipping is often accompanied by severe wear or even burning of clutch or brake friction plates. If the automatic transmission is slipping, do not rush to disassemble it. Instead, perform various inspections and tests first to accurately identify the true cause of high RPM but no speed increase. Solutions for automatic transmission slipping: First, check the fluid level of the automatic transmission hydraulic oil. If the fluid level is too low or too high, it should be adjusted properly, and then observe whether the automatic transmission still slips. If it still slips, the quality of the hydraulic oil should also be checked. If the hydraulic oil appears brownish-black or has a burnt smell, it indicates that the friction plates of the clutch or brake or the brake band are burnt, and the automatic transmission should be disassembled for repair. In addition, a road test can be conducted to determine whether the automatic transmission is faulty. Shift the gear lever into different positions and drive the car. If the engine RPM suddenly increases when the automatic transmission shifts to a certain gear, but the vehicle speed does not increase accordingly, it indicates that the gear is slipping.
Last time I took my Haval on a long trip, the RPM shot up but the speed stayed stuck, felt like all the power was wasted. I suspect it's clutch slippage—that thing's worn out and can't grip the engine output, causing high revs but slow movement. Could also be degraded transmission fluid or a stuck valve body throwing off shift timing. A clogged engine intake system, like a heavily dust-clogged air filter, can limit power too. Another sneaky issue: ECU control unit malfunction messing up fuel injection. I'd recommend getting it checked at a repair shop ASAP before it turns into a major overhaul. Regular maintenance should focus on clutch and transmission fluid condition, and replacing the air filter can prevent lots of headaches—saves money and keeps you safe.
Many Haval owners have reported this issue in the workshop, mostly due to clutch plate wear and slippage or transmission valve body sticking, resulting in poor power transmission. Engine ignition system problems, such as aging spark plugs or clogged fuel injectors, can also reduce efficiency. Sensor failures, such as incorrect signals from the speed sensor or throttle position sensor, can cause the ECU to misjudge. Simple diagnosis: first check if the fluid levels are sufficient and if there are any leaks, then use an OBD tool to scan for fault codes to help locate the issue. In daily driving, avoid sudden acceleration and frequent half-clutch conditions. Regularly changing the transmission fluid can extend component lifespan, saving both money and hassle.
