2006 Honda Civic whining noise when driving 

It sounds like you got a supercharger, don't worry bout it. Drivers will think that you are packing under the hood :)

It was power steering. I flushed out my stem with 5 bottles of honda power steering fluid and the noise has gone away.

Thank you all the comments! It is the power steering fluid. I checked the fluid and I found it is actually low. Then I added it. Now the whining noise disappeared!

sounds like a supercharger lol

Same sound in my civic

Idk about anyone else but I find it hard to believe that it could be the power steering when the noise changes depending on rpm

I had this happen my power steering fluid was low. topping it off took care of my noise problem.

I don't speak English but I'll try. And I know that many years have passed! 🫢. but I know that someone who passes by here can use it. My car had the same problem, it sounded horrible, and I didn't have a trusted mechanic since being a woman makes me feel uncomfortable going anywhere alone. so when it sounded too much I checked and the problem was so simple, it lacked POWER STEERING FLUID! almost nothing was going. and already the rudder after a while becomes hard. I hope it helps someone!

thats VTEC for ya son

Could be the idle or idler pulley. For me it turned out to be the idler, but I changed both and the belt. I purchased the parts OEM from majestic honda. If you want to save money, just purchase the two pulley's and belt-if it looks worn, and you can reuse the bolt and flange's. Without shipping you may pay around 50. RU-vid some video's and you'll see how easy it is to do! My fiance and I both have Si's and we just changed them...real easy :)

9 years later, your video is still helping people you never met. Thank you, sir!

Wow! You just prevented me from getting a headache (along with a NEW car!). My 'Honda car was making the SAME sound and I had the SAME problem. Who would have thought that it would be the power steering fluid! Thanks so much!

I filled the steering fluid and boom 💥 noise gone. Thanks for information guys

This happened to my Honda Civic 2008 LX as well. The issue was due to low power steering fluid. Topped up the power steering fluid and the issue disappeared.

Bearing inside tensioner pulley. Can carefully remove pulley from tensioner assembly on car with allen key (SAE 1/4 I think Fits). Have to lift engine by lower motor mount about 3" for clearance to remove (ac or brake line in the way).

It’s the power steering, my car was making the same noise and just added some power steering fluid

I fix mine yesterday adding power steering fluid.

Thank you! Saved me lots of money!

thats exactly the problem i have right now, thank you for this video.

Your power steering pump is cavitating due to air in line because of low fluid. Top up fluid , start car (leave it in park), and turn steering right to left a couple times to get the air out. After that you shoud be good to go.