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Q: My car is idling high. When I go over 40, noise seems increases. No engine lite on 2007 Honda Civic

The noise reminds me of a small plane as it rises higher in the sky. It is only evident while the car is in motion. I do not get an "engine light" signal or any other. This has been happening for several weeks. I keep the maintenance up-to-date. Mileage when this occurred about 100,000. Now at 102,000.
Thank you
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