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What are the reasons for severe jerking in the Chevrolet Cavalier's transmission?

1 Answers

DeAvery

07/29/25 10:10am

The severe jerking in the Chevrolet Cavalier's transmission is caused by faults in the engine oil system, excessive carbon buildup in the throttle body, fuel injectors, and intake manifold, and a faulty carbon canister purge valve. Below are the relevant details: 1. Engine oil system fault: Engine oil ensures adequate lubrication, reduces resonance, and enhances the smoothness of engine operation. Prolonged insufficient oil can lead to reduced power and increased fuel consumption in mild cases, and in severe cases, piston impact on the valves, causing mechanical damage to related components. Excessive carbon buildup in the throttle body, fuel injectors, and intake manifold can cause various faults, so regular carbon cleaning is necessary. 2. Carbon canister purge valve fault: A faulty carbon canister purge valve mainly manifests as broken wiring, air leaks, or closure issues. If the valve cannot close and remains open, it can cause an overly rich air-fuel mixture, making it difficult to start the car.

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