What are the symptoms of a stuck throttle valve?

1 Answers
Pearl
07/29/25 10:18pm
Here are detailed introductions about the symptoms of throttle valve malfunction: a. Unstable engine idle speed, persistently high idle speed that does not decrease, difficulty in starting the engine, especially cold starts. b. Unstable engine idle speed or no idle at all. c. Difficulty in starting the engine. d. Insufficient engine power, poor acceleration performance, and unstable operation. Here are the introductions about troubleshooting methods: a. Use a fault diagnostic tool to perform a throttle valve check, observe the data stream, and clean the throttle valve if the opening is too large. Generally, replacement is not necessary if there are no permanent fault codes. b. Replace the throttle valve if diagnostics confirm a permanent fault. Throttle valves are usually not repairable and should be replaced as an assembly.
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