What are the common faults of the BJ40 transmission?
4 Answers
BJ40 engine faults include engine abnormal noise, engine vibration, engine cooling system failure, engine oil leakage, engine oil burning, and unstable engine idle speed. Below are the specific details of the Beijing BJ40: 1. The manufacturer of the Beijing BJ40 is Beijing Off-Road, and it is classified as a compact SUV. Its dimensions are 4630mm in length, 1925mm in width, and 1871mm in height, with a wheelbase of 2745mm. The body type is a 5-door, 5-seat SUV. 2. The BJ40 is equipped with a 2.0T L4 engine with turbocharged intake, delivering a maximum horsepower of 224ps and a maximum torque of 380nm. The transmission is an 8-speed automatic manual transmission. 3. The front suspension type is a double-wishbone coil spring independent suspension, and the rear suspension type is a five-link coil spring non-independent suspension.
The BJ40 has quite a few transmission issues. I've driven this car for several years and often encounter difficulties with shifting in the manual version, especially when shifting from second to third gear—it makes a clunking sound and sometimes gets stuck. The automatic version is even more problematic, with issues like delayed shifting or erratic gear changes, and noticeable jerking during acceleration. Oil leaks are also a major concern; aging seals cause oil to drip everywhere, so it's best to replace the gaskets early. During off-roading, the transmission is under heavy load, leading to frequent slipping and insufficient power delivery when climbing. Unusual noises are common too, with humming or clicking sounds while driving. I've also experienced control module failures, sometimes requiring a computer reset. I recommend owners regularly check the transmission fluid's color and level and address any issues promptly to avoid minor problems turning into major repairs. Proper maintenance keeps the car reliable.
The BJ40's transmission has too many common faults. For manual transmissions, the usual issues are stuck shift linkages or gear wear, leading to poor gear engagement; automatic transmissions often experience slipping or jerking due to clogged valve bodies or unstable oil pressure. Oil leaks mostly come from poor seal performance of the oil seals—replacing them isn't expensive but should be done promptly. Abnormal noises may stem from bearing damage or chain looseness. Control unit failures are also frequent, with computer errors requiring diagnostic resets. When repairing, first check the fluid condition—black oil or metal shavings should raise alarms. Delaying repairs can easily burn out core components, costing more and posing risks. Off-road users should especially take note, as harsh conditions accelerate wear. I recommend a comprehensive check every 20,000 kilometers using genuine parts for peace of mind.
As a BJ40 owner, transmission issues can be quite frustrating. For manual transmissions, gear shifting can be rough with noticeable resistance when engaging gears, affecting smooth starts. Automatic transmissions sometimes experience delayed shifts, causing the vehicle to jerk. If you hear creaking or humming noises while driving, it's likely an internal problem. Oil leaks can be spotted by stains under the car. The most concerning issue is slipping, especially during off-road climbs or descents, where power delivery becomes intermittent and dangerous. Safety is paramount—if any problem arises, pull over immediately to inspect. I've learned that regular oil changes and maintenance can prevent many issues. Early detection and repair are key.
