J
3
Answers

Why is my BMW X7's idle speed fluctuating?

I recently noticed that my BMW X7's idle speed is constantly fluctuating when stopped at a red light or in traffic. This never used to happen before. What could be causing this and how can I fix it?

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Answers (3)

D

Hi Joanne, it sounds like there could be an issue with your idle control valve. This valve regulates the amount of air that enters the engine while idle. If it becomes dirty or clogged, it can cause the idle speed to fluctuate. I recommend having it checked and replaced if necessary.

M

Hey Joanne, I've experienced the same issue with my BMW X7. It turned out to be a problem with the MAF (Mass Air Flow) sensor. This sensor measures the amount of air coming into the engine and sends that information to the engine control unit for proper fuel delivery. If it's dirty or faulty, it can cause idle speed fluctuations. Consider having it checked and replaced.

E

Hey there, Joanne. I had a similar issue with my BMW X7 and it was due to a vacuum leak. The vacuum system is responsible for various functions in the engine, including controlling the idle speed. If there is a leak, it can cause the idle speed to fluctuate. Have a mechanic do a smoke test to locate and repair any potential vacuum leaks.

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