Heater does nt come on

check heat shield on muffler

Take it out & take it apart & go thru it

Something is wearing & noise isn't good

Have you checked you tire closely.Change it with the one on the other side and see if the sound transfer to that side.

A humming or howling can be cause by a dry, worn out wheel bearing. Also tires that aren't worn evenly across the contact surface of the tire will cause a wheel bearing like noise.

well first of all, check all 4 wheel bearings. if bad they will howl real loud.

You need to try and localize the area the noise is coming from, engine area, underneath of car or in the rear. Does the noise happen when car is standing still and gas is pressed? This kind of noise could come from a worn wheel bearing or differential.

CV JOINT DON'T HOWL, THEY JUST CLICK IN TURNS, U MUST HAVE A NOISY WHEEL BEARING

Hello! This could be from a few things - you could have a differential pinion gear that is misaligned and that will cause a howling noise - or it could also be a wheel bearing. Check your differential fluid and it might be worthwhile changing it.

Hope this helps and good luck!

-KCGTO Dad

its suonds like rear wheel barring u need to eras the car and turn the rear tire to see which side exactly then replace ir

Try jacking your vehicle up and turning the tires. listen for any odd noise like a grinding sound, wheels hubs have been known to make a grinding noise when they go bad.