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Q: Can car jolting be caused by bad IAC valve?

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Can car jolting be caused by bad IAC valve?

A: Yes, if it's bad it creates vacuum leak...

Yes, if it's bad it creates vacuum leaks, and when you get vacuum leaks, it gets wrong data to the computer and it gives the wrong amount of fuel to the engine. The air-fuel ratio is mixed and that can do all kinds of things. It's very common.

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