I do see some rubber on the the pulleys, should i clean that and adjust the tension? I thought it was the alternator bearings because the squealing seems to be triggered by the AC.
Most serpentine or single belt systems use an automatic belt tensioner which is just an idler pulley on a spring loaded arm.
The spring tension causes torque on the arm of the idler pulley which pushes on the belt and should keep it at the proper tension. If your belt tensioner is damaged or the spring has lost its tension replacing it may help restore the proper tension to the belt. If your belt does not have an automatic belt tensioner, it likely is tensioned by adjusting a non-spring loaded idler pulley or by adjusting one of the accessories itself.
This is often best done with the help of a friend. I have a relatively annoying squeek coming from what I think is my idler pulley on my chevy s10 with the 4. Thanks for your question about your S The first thing we would recommend doing is taking the belt back off and making sure all the pulleys in your system spin freely by hand.
You will feel resistance in your power steering and water pump but they pulley should still turn easily, smoothly and not wobble. If you find one that is sticky or wobbly, replace that component.
The other thing you can try is using belt conditioner. You may have to find an older independent parts store, but many will sell a spray on lubricant for belts to help quite them down. This conditioner will make your belt softer and run more easily on the pulleys hopefully quieting it down. I have a Buick Riviera. We put new belts on the engine, but now the belt squeal. Do you know how to get this to stop without adding a new compressor?
I decided not to use the air conditioner and do not want to put one on. Thanks for your help. Thanks for your question about your Buick. It is possible that a company makes an idler pulley you can bolt on in place of the air conditioner. Since this would be a custom application you would have to find an auto parts store that will help you try a few different belts to find the right length. I will be much glad if u answer a question that if the belt is tightened much than the normal,can it cause engine to make unsmooth acceleration or like it is pulling some heavy thing?
If you are having acceleration problems try checking your regular maintenance items like your spark plugs, air filter and fuel filter. Hello, I just got home from work. While leaving, I noticed a clunking noise while turning in reverse. Then while driving home I heard a high pitch whining noise coming from the engine? I have an 03 explorer. It stopped while in overdrive but made the noise in 3rd? Auto trans Previous owner said he replaced the Alternator maybe half a year ago.
I just changed the Oil and transmission fluid about a week ago. Sometimes if problems happen right after some maintenance was completed, they can be related to whatever maintenance was just done. In your case, we would suggest checking the transmission fluid level and making sure on your receipt that the correct type of transmission fluid was put in your Explorer.
Since the whining noise goes away in overdrive but is there in third, it seems to make sense that the noise has to do with your transmission. The clunking noise you heard while turning in reverse could be a suspension problem, or a problem with one of your CV joints. Yes, if the belt is not properly tensioned you could experience issues when driving the vehicle. We recommend checking your owners manual on how to properly tension the belt.
With me spraying that did that cause the belt to slip off or was it just a matter of time that the belt slip off? Thanks for your question about your Caravan. If the belt slipped off with the lubricant it probably was on its way off within a few miles anyway. Now that the belt is off, we would recommend replacing it with a new belt as they are relatively inexpensive and you have to do the work to get the new one on anyway.
With a new belt you should be fine leaving the lubricant on the pulleys. The other possibility is that your AC compressor is still causing problems. To totally bypass it, you would need to remove the compressor and install an idler pulley or install a shorter belt if the routing made sense. Helo my hyundai getz keeps making a noise on start up of the engine it sounds like its coming from the fanbelt but im not entirely sure thats the problem any help please? Loss of tension in the drive: This is typically indicated by a squealing belt at engine startup.
The belt squeals because there is improper tension in the belt drive system. This is usually caused by a worn automatic tensioner, but other causes can include a contaminated belt oil, belt dressing, etc. Loss of tension causes the belt to slip, which in turn generates heat that can lead to premature failure of belts, pulleys, and component bearings. The solution: The tensioner should always be inspected when there is belt noise.
This takes a lot of strain off the belt, the tensioner and everything else in the accessory drive system, improving service life and reducing noise and vibration.
Sometimes drive belt noise is caused by a worn decoupler pulley. One quick test is to unload the pulley by disconnecting the alternator field wire to see if the noise goes away. When replacing this pulley, make sure to install the same kind that was removed.
Trying to substitute a different pulley will likely increase noise and definitely impact the service life of the belt, tensioner and other components in the drive system. You can find vehicle-specific information about problems, tools and installation techniques in the excellent training videos on their websites.
Belt manufacturers are adamant about not spraying chemicals onto a belt because they may contain solvents that attack the rubber or leave a residue that attacks the rubber or attracts grit. Some products can even form a glaze that eventually makes the noise worse. Any fluid leaking from the engine onto the belts or pulleys can have similar effects, or it can simply lubricate the belt and make it slip. Home » Accessory drive belts: Belt noise means more than just worn-out parts.
No Comments. Order Reprints. Stretch-fit belts About 10 years ago, some car manufacturers began installing stretch-fit belts at the factory. Belt noise and pulley alignment A noisy belt is more than just annoying.
A telltale stripe of paint across both parts will show if it slips. Proper belt tension is a critical element of that system. Both gauges are accurate when used according to their instructions: The real trick is finding a belt tension specification. One last thing Many newer alternators have a decoupler pulley that lets the alternator free-wheel during engine deceleration. Report Abusive Comment Thank you for helping us to improve our forums.
Is this comment offensive? Please tell us why. The name for this durable synthetic rubber is ethylene propylene diene terpolymer or EPDM, which can reduce the serpentine belt noises if the condition of the serpentine belt is intact. If your serpentine belt is made from this EPDM then it can last up to , miles.
After that, you should notice the belt getting worn out and showing signs of replacement soon. This can cause the serpentine belt to move poorly over the pulleys and create serpentine belt noises. Sometimes, their serpentine belt might be in a good condition, but is misaligned meaning that the properties and materials are fine, but the serpentine belt has been misplaced.
In this case, it could be due to the mechanic recently installing a new one in the car in the wrong space. If the recently installed serpentine belt is causing serpentine belt sounds, then they probably did not do a good job of aligning the belt onto the pulleys.
In addition, there could be issues with the hydraulic belt tensioner. Many cars have a hydraulic serpentine belt tensioner, where the spring of the belt is maintained by a shock absorber.
Symptoms of a broken or damaged hydraulic belt tensioner include a leak from the tensioner or a rattling sound, causing the serpentine belt noise. The fix of this issue is that the belt tensioner needs to be replaced.
The belt should also be replaced, unless it has just previously been replaced recently. Your serpentine belt can become misaligned, but it is not the only part in your car that can be instead incorrectly.
Aside from the pulley for the drive belt tensioner, the idler pulley can also be a catalyst to the serpentine belt noises due to the misalignment. The idler pulley is one of the pulleys that is supposed to keep the serpentine belt moving correctly and in-line. The function of the idler pulley is to help move the other engine accessories, and can cause serpentine belt noise if the pulley is misaligned.
A serpentine belt is meant to run on various pulleys, like the idler pulley , and if any of the devices or tensioner pulley is not correctly aligned with the serpentine belt, the serpentine belt noise will occur, often in the form of a squeal. This problem is usually discovered after a new belt still squeals, wears down fast, or makes loud serpentine belt noise. A clear symptom that can alert you to this misalignment is increased wear on just one side of the belt.
This can usually be seen visually during analysis of the belt. If you can see when the pulley is not lined up, the belt will squeak and the alternator can be loose and shifted under angle. This has caused the alternator pulley to be misaligned with the serpentine belt, so the belt squeals and wears down quicker.
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