2002 Dodge SX 2.0 I'm getting a howling or ( high frequency vibration of some type) noise from the front end when in motion. Lessens when steering is pointed left of center. No howling when at a standstill (Tires are new and the problem preceded them)

go to the magicmechanic website and send him this--hes the best there is and will rply

HAVE THE FLUID LEVEL IN THE REAR END CHECKED AS WELL AS WHEEL BEARINGS FRONT AND REAR

There are several other things which can make a noise. The people you showed the car have the advantage of hearing or feeling the noise that we do not have a chance to do.

A catalytic noise can change with the engine RPM. You can rev up the engine in Park or Neutral and should be able to replicate the noise. If not, then you have a moving part making the noise.

Sometimes the Emergency brake material comes loose from the metal backing and jams inside the rear drum/rotors. It will cause vibration when pulling away from a stop, and eventually will grind into powder.

Rear axle differential clutches. There are friction disks inside some types of rear-ends. A special lube additive makes these work. Sometimes a refill of additive and lube can make marginally performing units more quiet.

U-joints can make noise and vibrate. Its another moving part noise.

The fan clutch can also make noise and vibration. The A/C compressor and compressor clutch bearing can make noise. The A/C clutch operates intermittently depending on pressure and temperature.temperature.

Without a description of the noise, this is impossible to diagnose. Common problem with these vehicles is a "grinding" type noise. This will be a bearing that has gone bad or brake pads that are beyond the service life (louder screeching or grinding upon braking). Popping noises are the CV drive axles are bad (noise is typically louder when when the vehicle is in motion and turning).

I would suggest,checking pulleys at front of engine, I some times use a short ( 2 to 3 Feet) length of hose such as a piece of old garden hose. Sometimes when engine is running you can place one end of hose near center of pulley, and the other end close to your ear and this will work like doctors stethascope and amplifie howling noise. Thus helping pinpoint which pulley is producing the howl. Warning if you use this method be very carefull not to let hose get caught in pulleys.

sounds like a wheel brg, if the noise lessens when you turn to the left while driving more than likely it is coming from the right side, but a brg makes more of a roaring noise.

I'd say there's no grease left in the CV joint boots, if it's front wheel drive. Something you should check right away, as your car has about reached that age, and if you run it without grease in the boots, you'll eat up the joints in a big hurry, and that's costly and dangerous as well.

I had a similar problem. The dealer change automatic transmission and differential, but the noise continu. After research on internet i think the problem is the front galiper who create a vibration on the disc wheel and the vibration frequence follow the front axle until interior car. Just press slowly the brake pedal and if the noise stop , that's it the cause i think. I dont change my galiper, but i have a new transmission . :)))

Replace the CV axles. I say replace both of the axles because if one is going out, the other one is right behind it. This should get rid of your clicking sound/vibration.

Does this happen while in motion or at idle?