Timing Belt Noise When Accelerating

The 2000 Ford Focus has 4 problems reported for high pitched whining noise while accelerating. Consequently, you may hear a pinging or rattling sound when accelerating, driving up a hill, or when engine is lugging. It makes noise when i accelerate, but even more noise when i take my foot off of the gas after the acceleration, but is usually quiet when the car is at a stop. What to Look For in a Faulty Timing Belt You should occasionally inspect the timing belt in your vehicle to make sure that it's in good condition. The timing belt change was done with the complete 160 000 km kit supplied by the shop. But whining sounds more like an idler pulley. I would pull off the timing cover and have a very close look at your timing belt, tensioners, and timing marks on the. it's not a constant rattling either. Hi All, My 1999 Subaru Outback (137K) just started to make a noticible whining noise during acceleration. No pressure loss. i've had my 2005 tundra for almost 6 years. It's also more cost-efficient to replace them both at one time. my 2002 Is 300 makes a grinding noise when i accelerate AFTER I CHANGE TIMING BELT NOISE COMING FROM TRANSMISSION - Answered by a verified Lexus Mechanic We use cookies to give you the best possible experience on our website. Well that is not really correct but when a generator or other pulley is the problem, it seizes, and one of the belts rips off. A high-pitched squealing noise that occurs when pulling away from a stop normally indicates a lack of tension – the second most common cause of belt noise. How to Tell if a Timing Belt Tensioner Is Bad. We put the car in for a service recently and had the timing belt seen to. Hi, last week I noticed a noise like a racing car when I Accelerate! I was travelling on the highway and the noise did not stop at all(2 hours trip). - indiana_guy84 , North Judson, IN, US. If its on acceleration you are hearing leaking noise its probably a intercooler pipe. When its happening if you. Ok, i don't usually come here for help since i never really get many responses to my threads, but this issue is starting to piss me off. Hi All, My 1999 Subaru Outback (137K) just started to make a noticible whining noise during acceleration. You need to pinpoint the location of the noise as much as possible. just when hard accelerating. Replace at 105K miles. The camshaft operates the cylinder head valves and rocker arm assembly,. my 2002 Is 300 makes a grinding noise when i accelerate AFTER I CHANGE TIMING BELT NOISE COMING FROM TRANSMISSION - Answered by a verified Lexus Mechanic We use cookies to give you the best possible experience on our website. Loud Whining Noise from Inside the Engine near the Alternator Area 7 Answers The whining noise started 6 months ago and is getting louder. It must maintain complete alignment at the same it turn the crankshaft exactly two revolutions for every one revolution of the cam shaft. Powered by the mixture of fuel and oxygen, combustion occurs when the spark from your spark plugs act as the trigger. This past weekend I noticed some chirping coming from the engine. No hesitation no idling rough. Without proper tension a belt will slip, the sidewalls will wear smooth, and the belt will eventually harden through "heat-ageing", a process referred to as glazing. I just recently changed the timing belt and since this I have a noticed a very loud vibrating noise when accelerating which only seems to happen when you press low down on the accelerator. Servicing your timing belt is usually accompanied by the replacement of the water pump and accessory belts, or sometimes the seals. Replace water pump and all drive belts along with timing belt. 2) Reduced Oil Pressure. If the fan belt is loose, it should be retightened by a mechanic to avoid accidents. I also had a rattling noise that I noticed sometime after I had my timing belt replaced on my civic. Pull the timing cover and look for shaved/burnt plastic and an oil leak in that area. any ideas what could. It disappears when I stop accelerating or sharply reduce my acceleration. When diagnosing engine noise, don't forget basic techniques like running it with the drive belts removed, dropping the transmission into Drive and checking for broken accessory mounts. my 2002 Is 300 makes a grinding noise when i accelerate AFTER I CHANGE TIMING BELT NOISE COMING FROM TRANSMISSION - Answered by a verified Lexus Mechanic We use cookies to give you the best possible experience on our website. But from today it started to have the same kind of Squealing noise when I accelerate. The belt itself will also exhibit damage in the form of frayed sides from being pulled against the sides of the other pulleys. Watch out for moving parts! If the noise is immediately gone or gets worse, the noise is cause by a belt to pulley problem. If the noise continues the noise is an accessory. The noise might be even louder if your car is just warming up. For about 6 weeks now our 2006 Pilot EX 2WD has been making a 'whining' sound when accelerating. If you have multiple belts you can take one off at a time to see what the problem is. However, a reciprocating part, like a piston or tire rod, would make a clicking or ticking noise if there was an issue. If worn, it may need to be replaced. Timm's The BMW M60 M62 and M62TU Engine Scary noises from the top end If you have any of the problems below, read on! • Tapping noises from the rocker covers • Very scary rattling at start-up • A V8 that sounds like a diesel • Heavy knocking under acceleration The modern BMW V8 can make some horrible noises My first BMW V8 was a 1993 730i fitted with the M60B30. I just had valves, timing belt, head, and clutch replaced on my stock 02 wrx about 2 weeks ago and it's been running like brand new. There are guides for engines with a timing chain. 3L V6 F DOHC Timing Belt question. it makes that noise even if i rev it to 3000 rpm. It basically makes a. knocking noise from timing belt area on warm idle 1. Belt noise can also come when one of the pulleys the belt is riding on starts to fail. A noise that occurs only when the vehicle accelerates is likely to be a slipping belt, as is a noise that occurs only when the car is started cold. The initial cranking in the morning causes the alternator belt to really squeal. Its the differential mostly, but in some cases i feel that the pump is making noise. The noise has a very high likelihood of being symptomatic of a slipping drive belt, which usually means replacing the belt and/or the belt tensioner. I used to like it but now it's just getting annoying. Sounds louder than it should when accelerating. All I know is I never heard the noise till the day I drove the car off the lot from getting the timing belt installed. I had the same problem with belt noise recently under the same conditions. Muffler perhaps? Makes a very small whistling sound when slowing down for a stop sign. The clutch is bad. My scangauge is telling me that the timing is sometimes 40 degrees advanced; 20 under heavy acceleration. Any mechanic can do this type of work, and there is no reason whatsoever to take a 9 year old car to a dealership for something of this nature. So, what should you do when your car won't accelerate? You should diagnose the symptoms. Could damage have been done while being towed to exhaust?. If the noise is gone, of course the problem is a belt driven accessory. Doesn't seem speed related, rather engine speed. The repair included parts listed in TSB 14-0194 as well as timing belts, additional gaskets, seals, guides, tensioner, cam, sprocket, gear crankshaft, among others. Nothing can spoil the resale value of a high-dollar car more than an engine failure. It started to make a whistle noise when cars idle and when you touch the accelerator you hear it more it sounds as though its coming from fan belt area i think. Lexus dealer said there is a small exhaust leak somewhere. The camshaft operates the cylinder head valves and rocker arm assembly,. If you hear squeals, then it could be your engine belt or serpentine belt. There are two distinctively different types of belt noise, "Chirp" and "Squeal". I tried to isolate the noise by holding one end of an old heater hose to my ear and moving the other end around the pulleys (poor man's stethoscope). A knocking or ticking noise from your engine is a sign that something is wrong, usually because of a lack of oil. He also works at a mechanic shop that I deal with alot. If you hear rattling or scraping noises, it will certainly be a bad timing chain, since you have eliminated the operation of the other likely components. You hear a high-pitched squeal when accelerating: If you notice a loud squeal when accelerating, especially if your car is just warming up, it could be that you have a loose or worn fan belt. Dealer has played games saying "its not bad enough", "you may get another one very similar to the one you have". When the timing belt or serpentine belt is ready to go, you probably won't hear a rattle. It maintains the rhythm of its engine. I am thinking it is either a VVTI or chain timing belt that is making the noise, but not sure. Due to worn alternator ; allow steering pump, alternator, air compressor’s bearing allow them to spin by creating noise. Bigger radiator LED lights over license plate 3rd Gen Wheel Bearings & 1st Gen Tacos Which timing belt/water pump kit to get? Shocks and struts recommendations? Loud squealing noise when accelerating HELP. Attempting to change out the worn camshaft, timing belt and tandem pump gasket on my 2006 TDI BRM. The car won't start but the battery works good, while starting it just turn over and will not start but the car turns over a lot faster the normal. Thank you for your help. But its a lot worse now. Read honest and unbiased product reviews from our users. I would recheck the timing chain tension. i noticed that when i stepped on the accerlertor the engine, or what i believe to be the engine, starts making a rapidly moving ch-ch-ch-ch sound. If the noise is gone, of course the problem is a belt driven accessory. Any idea what this is? It usually goes almost/fully away if the engine is fully warm. I'd say its a serpentine belt that is either worn or has lost tension. When diagnosing engine noise, don't forget basic techniques like running it with the drive belts removed, dropping the transmission into Drive and checking for broken accessory mounts. Are you sure it's the timing chain making noise, or the timing belt tensioner going bad, which is a common issue? Usually the tensioner does not go bad. Normally, the engine will barely make any sounds as it runs. One thing I have noticed that under acceleration I get a slight noise, bit like a diesel sounds from inside the cabin, more noticeable when cold. Think of it as cheap insurance for your engine. I had the same problem with belt noise recently under the same conditions. As you accelerate the pistons move faster and the noise changes appropriately. not really, i put the straw in mine and squirted it in, then just ran it for a bit, as brad also says, it could be water pump, start her up, if its making noise, loosen off alternator and take belt off, try it again, if noise is gone its alternator, if still there then its waterpump and you will need to get it sorted. If I stick to the manufacturer's recommendation, now it's the time to change the timing belt. Attempting to change out the worn camshaft, timing belt and tandem pump gasket on my 2006 TDI BRM. When replacing the belt, it’s a good idea to swap out the water pump, too. A collegue owns a Golf V6 4 Motion, and he complained and moaned so much about his noisy tappets on startup that the VW dealer in Camberley actually changed his engine - needless to say this hasn't cured the noise despite us all telling him it was normal. I just noticed this tonight and haven't heard this noise before. Its common for ball bearings to make noise when cold when they go bad, so I go with that, the timing belt stuff, or the alt or compressor bearings. Clutch Mart offers the best CV Axle warranty in the industry. , Some how cold weather makes the oil drain away, from the cam phaser. For about 6 weeks now our 2006 Pilot EX 2WD has been making a 'whining' sound when accelerating. Belt noise can also come when one of the pulleys the belt is riding on starts to fail. Re: "Squelch" noise while accelerating? yea it sound like a belt, hopefully you can get rid of the sound. A noise that occurs only when the vehicle accelerates is likely to be a slipping belt, as is a noise that occurs only when the car is started cold. Ma Ford Kuga makes a high-pitched noise when I accelerate: If your Ford Kuga generates a loud noise when you accelerate, it is quite conceivable that the alternator belt is the cause of your trouble. The camshaft operates the cylinder head valves and rocker arm assembly,. A wide variety of timing belt noise options are available to you, such as free samples, paid samples. just when hard accelerating. What might be causing this? Thanks for your feed back!!!. This driveshaft torque flex is magnified when turning your Audi left or right. At first he thought it was a timing belt tensioner, so we replaced it again but now it still squeals. I swear I think even the original timing belt components made this whine in the dead of winter right after I bought the car new (I thought it was an alternator whine). 0 making wierd whining noise (Prosperus01) 01-31-2010 02:29 AM #22 alright i'm sticking with the a/c compressor. Re: HDI rattling heard when accelerating Post by DickieG » Sat Jan 21, 2012 1:10 pm I can't help thinking that the injector noise you describe is perfectly normal, direct injection diesel engines do produce a rattle when power is applied due to additional fuel being injected and are noisier when cold due to lower thermal efficiency in the. Diagnosing Misalignment and Belt Noise July 30, 2014 at 10:54am. The drive belt is made of a rubber compound and wears out over time thus producing screeching sound. I'm hoping that you guys can point me in the right direction with this. I followed the above posts and installed a new timing chain tensioner kit. This expanded version was compiled by GoFaster, Skypup, TooSlick, Jimmy, ThinkDiesel, and Jonathan Bartlett. 2 "eco-tick" when the oil was cold, sounded like a diesel engine. However, a reciprocating part, like a piston or tire rod, would make a clicking or ticking noise if there was an issue. It might just be that the engine is louder too when it is cold out that it blocks out the rattling noise in the background. First, we will have a look at the timing belt noises on your Fiat 500 and then we will look at the reasons for these noises. SCREECH UNDER ACCELERATION. If you are hearing a popping through the intake (air filter box removed) or exhaust pipe you probably have a bad camshaft/lifter. In fact, most timing chains will last as long as the car itself. Replaced timing belt. Here's what I've noticed: Car accelerates at a max of maybe 2-3mph per second whether the pedal is half-way or floored. Be sure to have the harmonic dampener boot checked out, replace if beginning to show wear/wobble. Even over night or after work where its been sitting all day. It started to make a whistle noise when cars idle and when you touch the accelerator you hear it more it sounds as though its coming from fan belt area i think. Why Does my Engine Belt Squeal? Have your friends nicknamed your car screeches? Do you park in front of a different apartment building so when you start your car up in the morning and it makes an obnoxious squeaking noise your neighbors won't know it's your car?. just when hard accelerating. This comes on mainly in first and second gear when accelerating away but not until the engine is up to full normal working temperature. It might be a little extra labor, but changing the water pump when you go to replace the timing belt in your Porsche 928 will save you a ton of time and money later on down the road. While apart replaced timing belt, timing belt tensioner, water pump, accessory belt, plugs on cylinders 4, 5, & 6. 2) Reduced Oil Pressure. Doesn't seem speed related, rather engine speed. Hum: If the sound reacts to acceleration and deceleration, investigate your differential. Since then (with the new one), I get a rattle from the tensioner when accelerating hard or if I accelerate from, say, 3rd when I really should be in 2nd. a friend suggested it might be the timing belt, which i think is jsut the S belt. How to Quiet a Noisy Fan Belt. If your car is designed for 87 octane and is detonating,. Since I am going to. Crankshaft Test A simple test involving the amount of degrees you can move the crankshaft can also be a useful way of determining if you are having trouble with your timing chain. Abnormal combustion, more commonly known as knock or detonation, has been the limiting factor in internal combustion engine power generation since the discovery of the otto cycle itself. Serpentine or V-Belt Slipping: Another common cause here is noise transference from a slipping serpentine or V-belt. You will be surprised by the power of your engine after replacing the timing belt. The timing belt change was done with the complete 160 000 km kit supplied by the shop. This issue usually takes place in colder regions of the world. it sounds like the conveter has fallen apart and making the rattle noise, and the pieces can plug the exhaust shut causing a lack of power, or maybe you are hearing a spark knock, causes are cheap gas, needs a tune up or the timing belt might have slipped a tooth, if it has slipped a tooth you wont notice much change in the way it drives but the computer knows it has and it cant adjust the. The engines are noisy as is. This is a semi major job for most of these engines and would usually cost in the four digit range. I'll have a deluxe timing belt kit on hand in case something is worn. Timing Belt replacement tends to be an expensive exercise that appears to make little difference to how a car runs, although failure and trying to live without it might prove impossible. I don't think it is the stepper motor because there is no popping while driving in circles. -The noise only happens between around 2-2. well, within the last month i had done an oil change on it and everything had been going good up until about a week ago. At all other engine speeds there is no noticeable noise. But its a lot worse now. Replace at 105K miles. A couple months after I purchased it the belt started chirping like a bird. Replied by manualtrans257 on topic Odd Whining Noise from 2007 Honda Civic Must have a timing chain because my aunt has over 200,000 miles on her 2006 LX manual transmission. It only happens when I am going at lets say 40 mph (about 65 km/hr) and engine is at 2000 rpm and then I accelerate so that the rpm goes to about 2500. This parameter is often specified as the maximum number of degrees per second change that is permitted. The manual says to get the timing belt replaced at 90,000 miles. I have the 3 month warranty and the 6year power train. Camry & Solara Lounge 2005 Toyota Solara 3. When the timing belt is too loose, the result would be a rattling noise. This is at least double the amount of time you can get from a timing belt, and the timing belt was invented after the timing chain. Your Timing belt isnt the cause of your symptoms right now, but regardless if you havent done a timing belt you are well overdue. I have a 2008 4 cyl, 4 door Accord EX. The exhaust system could make noise when cold that clears up when hot, but the noise would sound like a vibrating pipe on the body. A noise that occurs only when the vehicle accelerates is likely to be a slipping belt, as is a noise that occurs only when the car is started cold. When the fan belt is loose, there is a chance that the timing belt has also suffered some wear. i've had my 2005 tundra for almost 6 years. Try fixing a rubber tape between in the internal part of the cover where it touches the engine. WHAT IS A TIMING BELT?. Are you sure it's the timing chain making noise, or the timing belt tensioner going bad, which is a common issue? Usually the tensioner does not go bad. Re: Rattling metallic noise on acceleration from engine bay; Wa (TC2000) I am having the same issue. 0 has this annoying squeak/chirping sound when I accelerate. Skip navigation Sign in. Usually if your fan belts are worn, it could mean your timing belt needs replaced as well. Makes the noise in really bad in 1st, 2nd, 3rd and 4th, not so much in 5th. Problem fixed. If you run the engine with the auxilary belt removed it may help trace the problem. The noise sounds like a bad CV joint in a front wheel drive car, sort of a binding, popping, clunking noise. Camry & Solara Lounge 2005 Toyota Solara 3. If the engine has a carburetor instead of fuel injection it probably has a mechanical fuel pump mounted to the engine. tappet adjustment, loose exhaust part, loose or worn pulley on the drive belt system, alternator bearings , low engine/gearbox oil level, very hard to pinpoint without being with vehicle but here are a few options to check out , good luck. Open the hood and inspect the V-belts when the engine is off and running. The timing chain on GM ecotec engines has always been loud, even this newer 1. No ticking noise just louder than normal like an exhaust problem but only at acceleration. Must noticeable in first gear, But its also present in second gear. Abnormal combustion, more commonly known as knock or detonation, has been the limiting factor in internal combustion engine power generation since the discovery of the otto cycle itself. When diagnosing engine noise, don't forget basic techniques like running it with the drive belts removed, dropping the transmission into Drive and checking for broken accessory mounts. I have a 2008 4 cyl, 4 door Accord EX. Today, for the first time, it made the noise when I pushed hard on the brakes at a stop light- not while coasting up, not while lightly braking, only at the end of braking as I pushed hard. I tried looking in the service manual. Engine rattling when accelerating can be a symptom of a problem with this timing belt. Rattles on acceleration, around corners and is more noticeable when feathering the throttle under load. 5 5A/T with about 57,000 miles and i just recently started having a few problems. My question is, whenever my car sits overnight. The bearing allows the input shaft to rotate independently of the crankshaft, and when the pilot bearing wears out, a grinding noise can be heard when the clutch is disengaged and the car is accelerating. As mentioned above, common belts that squeal are the power steering belt if you hear the noise during turns, and the A/C belt if the noise is noticeable only when the A/C is on. The car runs fine when I first start it but after the engine warms up I hear sounds coming out of the engine during acceleration, its like the sound of valves. The slower I accelerate, I hear it more. just when hard accelerating. After all, it’s around this point in the vehicle’s life span that most timing belts need to be replaced. - indiana_guy84 , North Judson, IN, US. It's kind of a wah-wah-wah-wah or wuh-wuh-wuh-wuh noise that gets faster the faster I'm going. I have a 2005 Toyota Camry with 60,000 miles. A knocking or ticking noise from your engine is a sign that something is wrong, usually because of a lack of oil. If accelerate for a couple of seconds in top gear and then ease off, you will find the the revs don't change much in that brief period but if your ticking is noticably louder while the accelerator is applied I'd say you have an exhaust manifold leak. The timing belt is going. Heavy Exhaust Fumes - If you notice more smoke and fumes than normal coming from the exhaust, this could be another indication that your timing belt is overdue for a replacement. It seems to come only in the lower rpm range and not every time but it is slowly happening more frequently. Why Does my Engine Belt Squeal? Have your friends nicknamed your car screeches? Do you park in front of a different apartment building so when you start your car up in the morning and it makes an obnoxious squeaking noise your neighbors won't know it's your car?. Timing belt is difficult to do if you have not done one before. The vibration is quite noticeable in the steering wheel. Please let us know what happens. it all happened the day i changed my spark plugs everything seemed fine and i drove to work and then went to lunch and when i started my car up i could hear a whining noise, almost like a belt spinning really fast when i pressed the gas so i changed my a c pulley and timing belt and still no difference. But its a lot worse now. 2 days ago it was very humid and the light came on again and I can hear the noise. The slower I accelerate, I hear it more. The belt itself will also exhibit damage in the form of frayed sides from being pulled against the sides of the other pulleys. What is That Engine Knocking Sound? You're driving your truck on the freeway when you hear a rattle increasing in pitch and a bad vibration form, then your own wheel rolls past you. TIMING BELT Compact design and low operating noise MEGA TORQUE G High-accuracy positioning and high-speed drive High-Accuracy Positioning CONCEPT Newly-Evolved MEGA TORQUE!!! To improve positioning accuracy Utilization with quick acceleration, slowdown and high-speed drive To improve efficiency of system by increasing the weight of conveying goods. The timing belt is positioned very close to the oil pan. This problem can cause an accident when accelerating on to a freeway. Noise is wear. When your belt displays any of the following: -squeals when accelerating. There are guides for engines with a timing chain. Why you need a new Timing Belt Kit - ASAP!. Its not bad,not loud, just mildly annoying to me. Ok, i don't usually come here for help since i never really get many responses to my threads, but this issue is starting to piss me off. Average repair cost is $30 at 95,900 miles. And if i brake while the car is making that noise, the breaks make an even worse screeching sound (but my breaks don't squeal when my car is not). A design flaw, this cover is somewhat loose. 5 Dlx) from May this year. The timing belt is an internal engine component that rotates the engine's cam and crankshaft in sync and ensures each cylinder fires at the appropriate time. Any mechanic can do this type of work, and there is no reason whatsoever to take a 9 year old car to a dealership for something of this nature. Crankshaft Test A simple test involving the amount of degrees you can move the crankshaft can also be a useful way of determining if you are having trouble with your timing chain. 7 liter engine. Timing belt is a vital link in functioning of the car. Quiet in park. Please help!!! Ive just bought a 1. a friend suggested it might be the timing belt, which i think is jsut the S belt. It's hard to guage prices because I'm in Calgary and everything here is extremely expensive because we invented oil and gas. Power steering belt slipping. This rattle noise comes from the plastic cover of the timing belt. only when accelerating do i hear a rattling noise coming from under the hood. Someone said they heard a high-pitched squeal when accelerating. Hyundai Elantra has a whinning noise when accelerating. Nissan has issued a service bulletin (NTB09-128) regarding this issue. Wheel bearings are also a common suspect and may be failing. I believe the fan clutch needs replaced because air conditioning has started getting warmer at idle but am trying to diagnose the squealing sound that sometimes happens when the air conditioning is turned on. Hello everyone. All timing belts should have the correct tension to ensure rotations inside the engine match the revs the car make. This sound usually is louder as you start the engine cold, and fades as you accelerate high. Instead, you’ll hear a chirp or a squeal; these sounds become louder when you rev the engine. The check engine light stayed off for a couple of weeks and the noise seemed to diminish some. The timing belt helps to control the timing of these components ensuring optimal engine performance. Exterior; Fog lamps; Vinyl upper/anti-scuff lower door trim w/integral armrest, map pocket, door pull handle, courtesy lights; Instrumentation; Auxiliary pwr point in instrument p. 47 Responses to N20 timing chain noise. Nothing can spoil the resale value of a high-dollar car more than an engine failure. A couple of the other main causes that would lead to whining noise when accelerating would be:​. Once into 5 all is fine. Maybe a slipping auxiliary belt - quite a common problem during colder weather. A knocking or ticking noise from your engine is a sign that something is wrong, usually because of a lack of oil. I wonder if it is the Timing Belt or some other internal engine Component. Read also: 5 Symptoms of a Bad Tie Rod End and Replacement Cost. One of the biggest burdens today for professional technicians and do-it-yourselfers is belt noise, and the No. But unlike the shady mechanic who attempts to change your engine air filter every oil change, replacing the timing belt is absolutely crucial. Check camshaft timing. The technical cause is thought to be the somewhat horizontal positioning of the hydraulic roller tappets (valve lifters) in the engine block. The car won't start but the battery works good, while starting it just turn over and will not start but the car turns over a lot faster the normal. Have a passenger ride with you to increase likeliness of determining which side the noise is emitting from. anyways, to test whether or not it is the belt, i would spray the belt with something like BELT CONDITIONER from CRC or any type of belt dressing. Here are some guides to help you see how the water pump job is done (below). The repair included parts listed in TSB 14-0194 as well as timing belts, additional gaskets, seals, guides, tensioner, cam, sprocket, gear crankshaft, among others. This driveshaft torque flex is magnified when turning your Audi left or right. When lubrication is lacking, the joint will begin to bind during acceleration when engine torque flex occurs. During the test drive, listen for humming noise coming from the wheel bearings; bad wheel bearings are not uncommon. Instead, you’ll hear a chirp or a squeal; these sounds become louder when you rev the engine. This comes on mainly in first and second gear when accelerating away but not until the engine is up to full normal working temperature. Below are the top 5 causes of serpentine belt noise when cold or accelerating. When in the lower gears and car standing still noise dosent happen. I had the same problem with belt noise recently under the same conditions. Awful noise when accelerating. Like as i'm speeding up, baaaa baaba ba ba baaaaaa ba ba baaaa (3 seconds into the recording, as well as 10 seconds in). I have a 2008 4 cyl, 4 door Accord EX. It might be a little extra labor, but changing the water pump when you go to replace the timing belt in your Porsche 928 will save you a ton of time and money later on down the road. If it gets louder while driving, especially when accelerating, it may be a belt. Rattling and Whining Sounds. Have a noise under the bonnet and check the auxiliary and alternator belts. Subject: Grinding/Growling noise when accelerating Tue Aug 31, 2010 1:17 pm I started noticing this issue on my Logan (1. A design flaw, this cover is somewhat loose. If I stick to the manufacturer's recommendation, now it's the time to change the timing belt. After having the valves replced when the timing belt crushed everything, I think that the valves are loose, or something. When the timing belt is worn, the timing can be off slightly, which often causes a ticking sound. rattling noise when accelerating up hill. Regular maintenance is the key to minimizing the chance of various issues. This problem can cause an accident when accelerating on to a freeway. Also having a heads up on the noise can reduce repair costs by addressing the problem before irreversible engine damage occurs. Sounds like a belt slipping. Timing belt has not been done yet otherwise all regular and recommended maintenance is done. Update: The car is also very loud when first turned on specially in this cold weather, when it warms sounds goes away, but it comes back when accelerating. A rattle could be normal noise or caused by a much more common issue like the drive belt tensioner or valve adjustment issue. Check if the timing belt has been replaced (it's a few hundred dollars job). At all other engine speeds there is no noticeable noise. I need to set the timing belt in my car for a Dodge Stratus 1998, that has a 2. Timing chain degeneration is normal and natural to the part—it must eventually be replaced. Noise is wear. Think this one is loud you should hear the old 2. My brother and I own the same car. When diagnosing engine noise, don't forget basic techniques like running it with the drive belts removed, dropping the transmission into Drive and checking for broken accessory mounts. What is That Engine Knocking Sound? You're driving your truck on the freeway when you hear a rattle increasing in pitch and a bad vibration form, then your own wheel rolls past you. A loose fan belt loses synchronicity with the pulleys that operate it, causing a loud squeaking noise. This rattle noise comes from the plastic cover of the timing belt. only when accelerating do i hear a rattling noise coming from under the hood. open bonet locate belt and spry with wd40 if squeaking stops there ya go its that belt. Other belts to consider are the alternator belt if you hear the sound under load or acceleration, or if under idle it may be the timing belt. I just changed the timing belt, balancer belt, water pump, tensioner wheels and other external belts. Skip navigation Sign in. Bigger radiator LED lights over license plate 3rd Gen Wheel Bearings & 1st Gen Tacos Which timing belt/water pump kit to get? Shocks and struts recommendations? Loud squealing noise when accelerating HELP. Detonation, Pre-ignition (Pinging) Noise. New timing belt. Noise From the Front of the Engine Problem Description A whining or buzzing type noise may develop from the timing chain area caused by excess slack in the secondary timing chains. Engine rattling when accelerating can be a symptom of a problem with this timing belt. When the timing belt is worn, the timing can be off slightly, which often causes a ticking sound. The camshaft operates the cylinder head valves and rocker arm assembly,. if its squeaking on start up you can track it down normally. It may have been the front pump of the transmission making noise, if the noise varied with engine speed and the noise really was coming from the transmission.