belt noise — how to diagnose and fix — ricks free auto,most belt chirps and belt squeals occur in the shortest spans between two driven components. so start the engine and spray a stream of water onto the ribbed side of the belt before it wraps around a pulley. if the noise goes away, but returns again.car makes squeaking noise at first, goes away when warm,by the time i drive another six blocks, the noise is gone. completely. at first i wondered about the summer heat and the serpentine belt. the squeaking while turning left made me wonder if it’s a stuck caliper. the fact that it goes away after about a mile of driving makes me scratch my head. tonight, i did experiment a little..
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check all the pulleys for excessive rust. clean rust and install new belt. belt deflection should be 1/2 inch at the longest part of the belt between pulleys. if the noise doesn't go away when wd40 is applied check the circulation pump for excess play in the pulley. post back with questions.
the sound of a squeaky belt in your vehicle’s engine is usually because the rubber belt is slipping on the metal pulley. similar to when your tires squeal on the pavement, this slip causes a dreadful noise. this may be occurring due to any number of factors, including the following:
my timing is making a when i first start my car, but after it up the . i'm pretty sure it's the timing because the first time i heard the i lube my with a little of engine oil and it went .
when the car was cold it would create a strong vacuum in the oil tank but, as it warmed, a pinhole would open in the clogged passage creating an infuriating and unfindable sound. at first it sounded like a belt squeak but in warmer weather it could develop into a howling sound. i fixed this by replacing the upper manifold plenum.
maybe, just maybe, the noise the jetta makes goes away because of better oil flow throughout the engine when hot.pushing down the gas pedal probably raises the engine noise and drowns out the other noise.
you'll notice the noise going away after the moisture dries out. most common causes of belt noise. worn out or stretched-out belt; glazed surface; oil or grease contamination; early morning moisture; 4. checking the serpentine belt and pulleys. we have established some of the most common causes for your serpentine belt noise.
if your serpentine belt is made from epdm, then it can last up to 100,000 miles. after that, you should notice the ribs of the belt getting worn out. this will cause it to move poorly over the pulleys, creating all kinds of noises. cold weather can also deteriorate the belt faster too.
to be sure there is one easy test that can be done. take a spray bottle of water and lightly spray some on the belt and on the pulleys while the noise is occurring. if it suddenly goes silent - it indeed is a misaligned pulley. you just lubricated the part that was rubbing and the noise went away, unfortunately it
this sound also occurs when running the steering into the stop because the load on the pump increases dramatically, usually causing the belt to slip. once the belt/pulleys warm up they 'grip' better and don't slip, so no noise is generated and the pump can assist steering as designed.
with the engine running and the sound audible, lightly mist the grooved side of the belt with water. if the noise disappears or lessens, but then shortly returns, the problem is probably a misaligned pulley. if the noise immediately increases after the belt is misted, the belt is slipping.
if it’s a low knocking noise that you can only hear at idle, but disappears when you rev the engine, it’s most likely a worn and loose big end bearing and means that the engine needs to be rebuilt or replaced. you will hear this noise all the time, but it will be slightly less when the engine is warm.
in the 1950s, the sales trick to sell a new belt was to spray a running belt to show that it was slipping or that the noise went away when wet. this trick went away when serpentine belts became more popular. but, this test can be used to isolate worn pulley bearings by eliminating belt noise that could be caused by an alignment problem.
inspect the belt for misalignment. a common cause of noisy fan belts is a slight misalignment of the belt on the pulleys. with the hood open, examine the belt to ensure it is mounted on the top most pulley completely straight. if you are unsure, place a tape measure along the pulley to provide yourself with a frame of reference.
i have an 02 taurus, squealing like a stuck pig from the belt side for seemingly for ever. change the belt, goes away and returns in less than a day or two. have changed it a few times and the compressor once. belt dressing, wd 40, q tip and vasaline you name it. it all works long enough for me to smile and drive off only to return louder than before.
the belt tensioner bearing is the most likely one to fail first, but it's usually the easiest to check and fix. with the belt off, spin the belt tensioner (which is usually the plain, smooth wheel on a spring loaded arm; the smooth side of the belt rides along it). a bad bearing will not spin as easily and/or will sound rough.
a very useful test is to remove the belt (belts if ac) and start the engine. if noise is absent it is verified as a belt-driven accessory, and can probably be felt by turning the various pulleys. note that the water pump isn't turning, so only a minute or so of idling is allowed.if noise remains you have just eliminated all the belt driven items, and it starts to sound expensive (sorry).
over time, noise can often originate from a belt that has started to dry out due to age, the friction of being constantly in motion and heat from the engine itself. as this process continues, the belt is no longer able to maintain the tension required to properly grip the pulleys that it links together, and it starts to slip — producing the noise.
the sound of a squeaking belt in a car’s engine can be caused by weather conditions, leaking fluids, maintenance issues or wear and tear. the magnitude of sound can range from a soft squeak to a loud and noisy squeal and it may occur while starting a
re: 5.3 knocking under load, only when warm - please help!! may 31 2015, 7:23pm. hmm the mention of putting extra tension on the belt and it goes away makes me think that it's something on the accessory drive. i would remove the belt and wiggle all thr pulleys and see if any of them move.
joined jun 21, 2011. ·. 190 posts. discussion starter · #1 · sep 20, 2011. hey guys, i recently noticed a squeeking noise coming from the front of engine, it sounds like a belt or pulley bearing,,, the noise almost goes completely away once the car is warm but a slight squeek is still present ,,, any ideas or opinions before i start replacing
at first i thought it was a belt slipping slightly, but after a month has passed i believe the noise it’s getting worse. as soon as the engine starts to warm up a bit, the noise goes away. sometimes i’ll notice a little chirping when i accelerate slightly, but after a few mins of warming up or driving it goes away.
when my car did that, it was the timing belt tensioner roller going bad. i changed it right away to avoid disaster. i'd suggest you determine immediately what the source is, because if it's the timing belt tensioner pulley, you don't want to delay changing it, it will be very expensive if it seizes.
after doing a timing belt replacement, your car may make some loud sounds. if this happens, it may be timing belt tensioner noise. here are some tips to help you determine if this is the case. the first is to verify it is timing belt tensioner noise. you can determine this by pulling over, opening
the alternator belt (also known as the serpentine belt) passes through several pulleys on the engine. when the crank turns, the belt pulls the other pulleys and causes them to spin, including the alternator pulley. naturally, the friction caused by spinning through so many pulleys at high speeds will eventually wear the belt out.