Troubleshooting method for slow upshift of automatic transmission

The detection of slow upshift of automatic transmission can be divided into the following steps: 1. First, check whether the oil and oil level of the gearbox are up to standard; 2. Then you need to use the detector to check whether there is a fault code; Priority to solve the fault code; 3. Read the data flow of the detector and check whether the air intake system leaks; 4. Focus on checking whether the hose part and throttle position sensor are adjusted in place, and whether the sensor is damaged, resulting in engine power decline and slow upshift; 5. Check whether the computer version of the gearbox is too low and the computer version of the engine needs to be upgraded; 6. Test the gearbox valve body plate to see if the valve body is abnormal; 7. Test the pressure of the transmission oil pump, and check whether the pressure is too low, resulting in slow gear shifting. It is worth noting that the gearbox needs 60,000 kilometers of routine maintenance, and it will be invalid if it exceeds time.