What Causes Jerking When Shifting from Second to Third Gear?

[Franklin]

For manual transmissions, a faulty spark plug may cause jerking when shifting from 2nd to 3rd gear. Check if the spark plug electrode gap is too wide or if the ceramic part of the spark plug is cracked. For automatic transmissions, another possible cause is a malfunctioning shift solenoid valve. Use a diagnostic tool to check for any trouble codes in the transmission and to verify if the data during the 2nd to 3rd gear shift is normal. Here are some additional notes on shifting: Most modern cars are equipped with synchronizers, making gear shifts easier. However, improper operation can damage the clutch. Using the double-clutch shifting method can help extend the lifespan of the components.