Car Sounds
Kia Sportage
Ford Windstar GL
Honda Civic SI

Why would a vehicle whistle at high RPMs?


Top Answer
User Avatar
Wiki User
2007-03-04 14:20:09
2007-03-04 14:20:09

It might be a leak or hole in vacuum hose. As you increase RPM by pushing the gas pedal, pressure builds in the hoses making a whistling sound (e.g., 65 mph, high idle). High pressure goes down when you release, and the sound goes away. Have someone hold the idle high so you can locate the leak. Also many high flow air intake systems and some stock air intakes make a whistling noise at higher engine speeds. This can be checked by slightly reving the engine while someone listens to the air intake. P.S. Check the breather hose to the PCV valve and the PCV valve itself. Is it stuck? does your engine have a turbo? a turbo working properly , whisltes. if no turbo, you have an air leak, most likely in intake manifold


Related Questions

User Avatar

Your vehicle will go into high rpms and not move very much. Also clutch will start to "slip" as your driving it will just start to rev high.

User Avatar

A defective vacuum line can cause a whistling sound when the vehicle is accelerating. A loose belt can also create a high pitched whistle sound.

User Avatar

lower rpms use less gas higher rpms have more power

User Avatar

yes, a whistle sound is high pitched sound

User Avatar

Boat engines are built to hold high rpms (revolutions per minute) for long periods of time. Vehicle engines are not built for high rps or most of the anyways. Vehicle engines also have more torque the marine engine.

Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.