Why is my car whistling when I start it?

Constant circulation of air and cooling fluid through your car's engine can cause small cracks in hoses, breaking their vacuum seal. The whistling sound you are hearing could be air escaping through these holes.
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Why is my car making a high-pitched whistle?

A high-pitched, shrill whistle can really get annoying, especially if it occurs frequently while you drive. There are generally two possible explanations for the whistle. The first is that your vehicle is running low on transmission fluid. The second is that your car's fuel injectors have gotten too dirty.
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Is it safe to drive my car if it's whistling?

Wear and tear can damage these with time, making your vehicle feel loose. If ignored, the whistling problem tends to get noisier, and the problem could impact your tires and even your transmission, so you should see a mechanic right away.
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Why is my transmission whistling?

The whistling noise from the transmission could be either a thrust bearing failing or a clutch pack is slipping under certain conditions. First check the fluid to the transmission and make sure that its full and red in color.
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Why does my car squeal on cold start?

When you have a squealing noise on start up, that goes away after a few minutes, is normally a belt issue. This is typically a sign that the belt is slipping enough that it makes the noise until everything gets to moving and the belt will quit slipping.
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Low Pitch Whistling Noise from Car



What is the high pitched noise in my car?

A high-pitched squealing when you're driving could well mean that your accessory belt (or “V-belt”) is telling you that it's close to the end. If your belt breaks or snaps then your car won't run anymore, so get it looked at as soon as possible to avoid a breakdown.
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Why does my alternator whistle?

Your car can also make a whining sound when the voltage regulator is sending signals to the alternator to charge more than is necessary. If you hear any type of whining or grinding sound that's a good indication that your alternator needs to be checked.
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What are the signs your alternator is going out?

7 Signs of a Failing Alternator
  1. Dim or Overly Bright Lights. ...
  2. Dead Battery. ...
  3. Slow or Malfunctioning Accessories. ...
  4. Trouble Starting or Frequent Stalling. ...
  5. Growling or Whining Noises. ...
  6. Smell of Burning Rubber or Wires. ...
  7. Battery Warning Light on Dash.
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How do you get rid of an alternator whine?

If engine noise is your culprit, you may hear a whining or clicking sound. Its pitch will usually vary with engine speed. If this is the case, you can install an alternator noise filter on the power line between the battery and the alternator to minimize the problem.
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How do you tell if its your alternator or your battery?

If the engine starts but dies immediately, your alternator probably isn't keeping your battery charged. If a jump starts and keeps your car running, but the car can't start again off of its own power, a dead battery is probably your answer.
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Can low oil cause squealing?

Driving with low oil won't cause a squeaking sound. But it will cause other sounds. Insufficient levels of oil will lead to clicking or ticking sounds when driving. However, keep in mind that even with decent oil levels, the ticking sounds can still occur.
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Why is my car making a whining noise when I turn?

Power Steering System: If you hear a loud screech or whine as you make your turns, you may have an issue with the power steering system. Sometimes a simple fluid top-off is all that is required, in other cases, major repairs are needed. Tie Rods: A clunking sound as you turn can be a sign of a loose or busted tie rod.
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Why does my car squeak when I start it in the morning?

Most likely cause for this is that you have some condensation built up overnight on either the belt or one of the pulley wheels, and until this has evaporated the belt will be able to slip a little, causing a squeak. Once the engine warms up, the condensation is gone.
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What does a car sound like when the oil is low?

Should your vehicle's engine run low on engine oil it could cause it to make a loud "ticking or tapping" noise. This noise is caused by an insufficient amount oil being pumped into the top part of the engine. A simple check of the engine oil level will help you determine if the system is low.
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What does a worn serpentine belt sound like?

Belt Noise

As these belts wear out, they can begin to squeak or squeal. They make noise because there is not enough tension on the belt, or because the pulleys are misaligned or weak. Often, simply changing the belt will make it stop squealing. The noise isn't usually a danger, though it does sound alarming.
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What does a car sound like when it needs oil?

Louder Engine Noise and Knocking

If you ignore the increased engine sounds, you'll start to hear knocking, rumbling, and even roaring to let you know that your vehicle is in dire need of an oil change.
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How much does an alternator cost?

Labor costs vary as well, since some alternators are easier to get to and thus take less time, but expect to pay between $200 and $600 for the labor. All together, expect to pay somewhere in the range of $350 to $900 total for an alternator replacement.
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Can AutoZone test your alternator?

Every AutoZone in the USA will check your alternator, starter, or battery at no charge.
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What are signs of a bad car battery?

10 Signs Of A Dead Car Battery
  • No Response At Ignition. ...
  • The Starter Motor Cranks But The Engine Won't Turn Over. ...
  • Sluggish Cranking Times. ...
  • The Engine Starts But Then Dies Immediately. ...
  • No Door Chime Or Dome Lights. ...
  • No Headlights Or Dim Headlights. ...
  • The Check Engine Light Turns On. ...
  • Misshapen Battery.
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Can an alternator squeal?

Why Are My Alternator Bearings Squeaky? Alternator bearings enable the rotor to rotate within the stator, and they're quite susceptible to wearing off. When the bearings are worn off, they cause the appearance of the high-pitched squeaking.
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Does alternator make whining noise?

Improperly aligned alternator belts will often produce a whining sound.
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How much does it cost to replace alternator bearings?

Cost to Replace a Bad Alternator Bearing

Still, the repair will cost around $20. Alternatively, you can buy a replacement OEM alternator from a junkyard and replace the whole thing yourself.
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What can damage an alternator?

Driving a vehicle through water that is deep enough to splash or flood the alternator can damage the alternator shaft bearings and possibly the brushes and electronics inside the unit as well. Water can also cause corrosion that over time will damage the wiring and bearings inside the alternator.
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