Q: honda civic emitting high pitched noise under engine

asked by on January 18, 2016

My honda civic is emitting a high pitched squealing noise from underneath the engine a soon as I start the engine and gets louder as I drive. What is causing the sound?

It sounds like your accessory drive belt is loose and needs tensioned. If the belt has too much slack it will squeal. Over time, the rubber belt wears out and stretches. If it has cracks or splits the belt will need replaced. A bad pulley could also be to blame, but usually has a squeak rather than squeal. With the engine OFF open the hood and touch the belt. Hold is tightly and see if it has slack. Also look for signs of something leaking onto the belt. If the belt is loose it needs to be adjusted. There are two tensioners on your engine for the two belts it has. Adjustments are torque sensitive and adjustments should only be attempted by trained technicians. If you need assistance, have a mechanic, such as one from YourMechanic, inspect your vehicle’s noise issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

2012 Honda CRV door key turns freely but does not lock or unlock the door

An image of the parts involved can be found at this link. A more complete image of the lock and mechanism is available within the Factory Service Manual but I cannot reproduce that image here. Suffice it to say, if...

Check engine light on inhibitor switch

Hi there. Thanks for sending in your question. It's less likely that the inhibit switch is the source of your vibrations or symptoms. It's more likely that something else, such as worn out engine mounts, a vacuum leak or a...

P1659 ETCS RELAY OFF MALFUNCTION

Hi there, thanks for writing in. Unfortunately since your vehicle seems to be one not sold in the United States, I can't access any repair information for your N-WGN. The information should be readily available in a service manual for...

Related articles

The Best Used Cars to Buy for Short Commutes
If If you’re lucky enough to have a short commute to work, then you need to consider different factors when buying a used car than someone with a lengthier drive (or more time stuck in traffic). Chances are good that...
How to Modify the Alpine Navigation in an Acura or Honda
Modifying Modifying the original equipment manufacturer (OEM) navigation system of your Acura or Honda vehicle with aftermarket software is an easy way to add additional customization features to the already-installed system. Using a simple third-party computer program and a...
A Buyer’s Guide to the 2012 Honda Civic
America’s America’s best-selling compact car, the Honda Civic has been around for nine generations now, and the 2012 models boast some very exciting features and upgrades. Including coupe and sedan styles, the Civic continues to be one of the most...