Knocking Noise When Accelerating Hard



To learn more, see reviews below or submit your. Average failure mileage is 24,600 miles. The noise is the of the sort that sounds like a cable rubbing against something. It’s hard to hear compared to any other rod knock videos I’ve seen before on the forum. The car also vibrates while idling. I can hold speeds at the posted limit (of course) but when I hit the accelerator, I get the noise. Impala - 08 impala lt 3. There's also a filter that goes under it which can get gummed up. When I accelerate (sometimes) not all the time, I hear a knock sound, only upon acceleration, I noticed you can be going very slow like 5 km/h and if you press quite hard on the pedal to jolt the car it makes the noise (sometimes) aswell. Sounds more like Shock spring, Diff, shaft body noise like - hard to explain. Truck makes clicking noise when engine is working hard? Jul. Hi Everyone, 3. Hard to tell though just going by the description of the sound, would need to hear it on a video or something to know better. 2001 DTS, 97,000 miles, regular gas (always), Mobile 1 (always), no codes, no engine light. This may occur if the fan becomes clogged with lint, which reduces air flow and makes a clicking, knocking or whistling sound. What Does a Knocking Noise Mean When I Apply the Brakes? Credit: Getty Images AsiaPac/Getty Images Sport/Getty Images A knocking sound when applying the brakes could indicate different problems, such as loose calipers, bad shock absorbers, worn constant velocity joints and failing tie rods. It was brief and I couldn't figure out what was causing it. BMW Vibration and Thumping or Shaking While Accelerating - Center Bearing or Flex Disc e46 zhp) it makes a knocking sound, and feel, where the cup holders are. 1 Worn suspension parts can also be a cause of a knocking sound when braking. Nocking sound when accelerating hard 2000 Audi 5 Answers. Last year we put a good and very well maintained engine and transmission from a '78 into my '72ran great until last week. Knocking noise when accelerating on a automatic transmission engine, does it have anything to do with the gearbox When the car stop and when i want to accelerate, it make the sound and stop after a while. When the fuel is detonating it called spark knock. The centre bearings on the propshaft make a similar noise to what you describe when they are on the way out, but that should not be only when accelerating, normally it is speed dependent and gets louder as you go faster - a sort of loud "rubbing" noise I suppose you could say a bit like tyres on a wet road. Re: Grinding noise when accelerating Post by mpstick » Wed Mar 27, 2013 6:00 pm stopped by freedom ford and it was confirmed that it was the catalyst converter and it is covered by the extended emissions warranty ,yaahoo! they're in the process of waiting for parts and they'll give me a call when received. If I'm easy on the gas pedal is doesn't happen, or if it does it's much softer. The sound of pinging (pinking) has been described by some as 'knocking". Engine spark knock is usually heard during moderate to heavy engine acceleration. 2000 Audi A6 quattro, usa, automatic (with sports +/-) There is a repedative nocking/thudding sound when I accelerate hard (foot to the floor) the sound seems to be throught the car as if the drivesh. Noises While Accelerating. It's kind of a wah-wah-wah-wah or wuh-wuh-wuh-wuh noise that gets faster the faster I'm going. Mine's done that since day 1. When I am accelerating from a complete stop I only hear it once. Loud knocking banging noise on 350 Chevrolet that comes and goes still drives when making noise but everytime accelerate it starts banging. I've had the car 2 years and 20,000 miles, recently under WOT just before the 1st to 2nd shift I heard a clunk noise from under the car to the rear and it felt like I ran over something on the road. Could also be the gear linkage moving. What to Do When Your Hard Drive Is Making Noise The very first thing you should do is make sure the hard drive is the actual source of the noise and not a different hardware component. Although I have one problem where in the mornings especially or after the car has been sitting for a while, a get a bit of a ticking/knocking noise until you drive around abit and the car gets warm. 99 F-series lack of power, rough idle, "Check Engine" light on, sucking sound on acceleration Hard start when cold, "Check Engine" light comes after starting, 97 and up California emissions Intermittent light knock at idle or low speeds--98. if you can hear it anywhere it might be rod knock. If I start off in 2nd the noise also seems to be louder than in any other gear. This noise is actually occurring. That makes this seem strange. I have a 2007 escalade ext and I'm experiencing a clunk noise when I accelerate from a stop or even sometimes when slowing down it seems like it's only doing it on low speed not sure if it's tranny or drive axle I also noticed that when I slow down the Rpms bounce up and down not sure if this is normal went from a f150 to an escalade. the only noises i hear on mine are the clutch basket and the balancing hear on the left side. The noise sounds metallic, like gears are clicking together a bit. When the fuel is detonating it called spark knock. The symptom is more pronounced when the engine is at operating temperature. This will cause knocking when you brake and go over certain bumps. 0 TDI 4x4 is making a knocking sound when I accelerate hard in gears 4, 5 & 6. Especially if the spark plugs are old and tired/fouled, spark knock sounds just like pinging when you accelerate. It is only when accelerating form a stop. It sounds like splines skipping. I'm not sure under what topic to post this because I don't know where its coming from. It sounds like engine knocking. Use higher grade of fuel; Refer to a mechanic. First off, the name simply sounds intimidating -- knocks are hard and often imprecise sounds, and if they're being produced by a lot of moving metal parts, that's probably not good. Engine knocks during idle? In the past week, my engine has developed a knocking sound while idling. Driveshafts are like that. It seems to only have been heard/felt when going over an elevation change or when the suspension was unloading. It isnt that noticeable upon start up but when accelerating it gets louder and faster, but isnt there when i let off the gas. within the Drivetrain forums, part of the LSx Technical Help Section category; Well, I finally bought a 1998 SS, but got a few questions. - Im asking for your help. Engine has a knocking sound when I'm parked and rev the engine. The knock sensor is a piezoelectric sensor that contains a piezoelectric sensing crystal and a resister. Spark Knock (Detonation) Posted on January 30, 2013 by adamseer Spark Knock is usually a knocking, rattling or pinging noise which may be heard when he engine is accelerating or is doing work really hard below load (driving up a hill, towing a trailer, passing within the highway, and so on. Hi, A loud knock/tap developed after dyno testing. This is what rod knock sounds like. It is loudest in 2nd gear when I'm doing light acceleration at around 2. I have previously had both front suspension struts, bump stops and front sub-frame replaced under warranty a couple of years ago, but my Civic is now almost 3. These common car noises can spell trouble and cost a lot of money, especially if ignored. A knocking noise can occur from worn engine mounts. I feel like I have a problem, so I am curious to see what you find out with yours. my car is an automatic. It feel more like a mechanical thing and not a tire thing. Since then the driver's side wheel has also worked loose. M of 3 to 3. Engine has a knocking sound when I'm parked and rev the engine. It will make the same noise when in any gear and rolling along with no revs, press clutch pedal down and then let it our quickly - same thump. I have a clicking noise coming from the driver's front wheel, upon acceleration - only in 1st and 2nd, during hard acceleration. Condenser Fan. If I give it any gas, the knocking sound goes away. This popping noise occurred from a standing start, hard left right turns or even sometimes after braking hard then starting off again. goes away if its in park or as soon as the revs pick up when i take off again. Mine's done that since day 1. It sounds like a heatshield or something, but they tightened up the ones around there. After getting off the highway and back on the streets I noticed a slight knocking/ rattling sound coming from under my engine bay during acceleration, between 1,2,3 gears. Sometimes the sound can be hard to pinpoint because it will seem to happen at different, unrelated times. thumping / knocking sound coming from driver side wheel area. Oil seems fine/full. What to Do When Your Hard Drive Is Making Noise The very first thing you should do is make sure the hard drive is the actual source of the noise and not a different hardware component. Recently replaced the primary chain on my 03 Ultra and decided to change out the compensator sprocket spring stack while at it and new bolt also. There are a lot of things that can cause a noise when accelerating. I was running on premium gas. The most common fix is to tighten or replace your engines various belts. It is to the right of power steering pump. I got on it a couple times giving it about ½ pedal and I'm hearing a fast rattling/ticking sound under the hard throttle. A low rumble or knocking noise could be caused by a bad rod bearing on the crankshaft. I did an oil change and put some lucas in and it quieted it down a bit but its still there. Noise came up after about 800 miles on the BB/cam build. Piston slap also makes a knocking sound during acceleration and with the 35,000 km (21,700 miles) your motorcycle has on it, it is definitely a candidate. I have the problem of knock in my engine when accelerating. Discussion Forum: knocking sound when accelerating • GL1200 Information & Questions • The premier web site for Goldwing technical information, DIY tutorials and community discussion knocking sound when accelerating • GL1200 Information & Questions • goldwingdocs. I am hearing a clunking/knocking noise when I accelerate and decelerate, especially in lower gears. There is one knock with each rotation of the wheel that can be felt a little bit through the steering wheel. When my cars temperature surpasses 80*C, the valves begin rattling on acceleration. Now its loud and much worse hot. The noise is worse while under load and actually in motion. This slight movement is due to the residual transmission fluid in the clutch packs that creates a partial apply on startup. It was kind of like when you let off the clutch too early or give too much gas when trying to roll in 1st. Engine spark knock sounds like a metallic knocking, pinging or rattling noise coming from your engine. This feature is not available right now. Any such noises suggest there could be a problem with one or more of the numerous components in your car's suspension and steering systems. Dealing With a Squeal While You Accelerate (Belts) Some people attribute this squealing noise to the cold, which might have some part to play in it all (in some sort of way it might constrict the belts or something), but this squeal usually means that you’re going to have to replace a belt or two. I just recently purchased my 350z (03 touring 60k miles) and I've noticed a sort of tap/knocking noise when I accelerate. Engine has a knocking sound when I'm parked and rev the engine. Also, when you tap the brakes with a quick firm tap, the wheel will turn slightly right or left (can't remember which). Could be the actual exhaust knocking against the bottom of the body - accelerating makes the engine move which alters the angle of the exhaust making it knock. It only happens when I accelerate really hard and seemingly when the engine is coldish. Quiets down to nothing as its just running. Any Vibration on hard acceleration (without wheel spinning)(this mostly happens in 1st) will be due to worn mounts causing the exhaust manifold to come into contact with the subrame making a loud 'vibrating' 'rubbing' noise. This crystal creates a small amount of voltage when shaken. The problem was a mysterious front end popping noise emanating from the front drivers side suspension area of my 96 Auto TT. just the knocking and juddering when over 2000rpm. My 2014 Screw has only 3000 miles on it. Learn more about Volvo XC90 at the Edmunds. The noise may also be described as ticks, taps, knocks or thumps. Re: Nissan Pulsar N16 2001 Model Rattling Noise Under Acceleration 05/05/2013 3:19 AM I appreciate everyone's contribution,I have learned a lot from you all, I checked on youtube and found my condition matched the pigging or detonation theory and so I bought 98 octave yesterdayand it was a great improvement noise has reduce from big rattle to. my car is an automatic. Related Articles. Loud knocking banging noise on 350 Chevrolet that comes and goes still drives when making noise but everytime accelerate it starts banging. the noise is not affected by bumps or steering. What this will do is stop the retarding of ignition timing and let you hear more of the true noise that is occurring. Why Does My Car Make Noise When I Turn?. After all the front end work I did a couple of weeks ago, now I am getting a loud knocking noise from the right front just going down the road. One of my 3 trucks with 610K miles has a new Turbo charger installed 6 months ago. Getting under the vehicle would be the only way to diagnosis the problem to determine if it is one or the other. Noise is only there during acceleration from a dead stop. Firt time I took it to the dealer, they didn't find anything wrong. The noise is virtually unexistant untill I start to go forward and forward only. It is not an engine noise but is either the transmission or Transfer case. I got on it a couple times giving it about ½ pedal and I'm hearing a fast rattling/ticking sound under the hard throttle. It is only when accelerating form a stop. I'm getting a loud humming/vibrating/knocking noise - like someone knocking on a door, only less loud - when accelerating and when I stop accelerating, the noise stops, but the actual vibration with a slight knocking noise doesn't seem to end until the car comes to a complete stop. What Does a Knocking Noise Mean When I Apply the Brakes? Credit: Getty Images AsiaPac/Getty Images Sport/Getty Images A knocking sound when applying the brakes could indicate different problems, such as loose calipers, bad shock absorbers, worn constant velocity joints and failing tie rods. And, Usually occurs after the engine has reached or is near normal operating temperature. My 2016 Yukon Denali is exhibiting a ringing noise upon mild to moderate acceleration. Noise still there. TOYOTA YARIS Yaris making knocking noise Hi all My first post please helpadvise I have brought a second hand toyota yaris T-Spirit 53 model and not expert in cars. Quiets down to nothing as its just running. I will admit that I drove it hard on the freeway with my buddies. My Yukon makes a whining noise when accelerating as well as when cruising at say 40 mphonce the truck has shifted into the final gear. The torque converter turns while the transmission is in park and neutral, therefore, any noise from the torque converter will occur while the vehicle is in gear. 2 TSI DSG - Random knocking noise when accelerating - bolt : Has it got a knock sensor on it, pinking is what it sounds like from your discription, is usually controlled by the ecu,. but its still there. Lower ball joints, track rod ends and upper shocker mounts all seem ok, with no play. I'm having a similar issue. Dealership came back and said transmission was bad. It sounds like it is coming from the hood/engine area. could it be the rearaxle is worn. I inspected my u-joints and even a greased them but the problem is still there. WMSS Couldn't find anything when I last had it in. Had coil and plugs changed past summer. The joints become dry, causing the rollers to wear. I was pulling out into some heavy traffic today and got on it pretty quick from a dead stop. Issue has also been noticed when i use to drive on some steep roads or in hilly section of motorway/GT Road. This page is a list of common faults that Nissan Micra k11 owners have reported over the years. Other things that can produce a knocking sound when the engine is accelerated hard is crappy fuel. When I pedal forcing a little with my right leg, the bike makes a noise that I don't know how to describe. Consequently, you may hear a pinging or rattling sound (spark knock) when accelerating, driving up a hill, or when the engine is lugging under a heavy load. If it sounds like a single knock, you (or your mechanic) can isolate the cylinder by disabling the spark or the fuel injector for each cylinder one at a time. The symptom is more pronounced when the engine is at operating temperature. Perform the test a second time with the wheels in the opposite direction. Getting under the vehicle would be the only way to diagnosis the problem to determine if it is one or the other. Noise still there. the reason why i asked about the wade of the oil, is because if you have alot of miles on it,changing to a thicker oil would help quite it down especially under heavy acceleration. It has just under 600 miles on it currently. The sound is like a pinging or knocking at the back of the motor and only under load/acceleration. CarComplaints. This will cause knocking when you brake and go over certain bumps. Is this noise related to the RPM and load? I might have this noise, accelerating in 4th and 5th makes the noise especially at higher RPM just before shifting and then shifting to 6th RPM drops, load is applied and noise goes away. Last year we put a good and very well maintained engine and transmission from a '78 into my '72ran great until last week. I have just purchased a 2012 Acadia LT1 and am having a problem with a rattle when I accelerate from a stop. The misfire is causing the hesitation; you just need to find out what's causing the misfire. Per the dealer, this issue appears to be occurring on many 2009 Tsx models. When the truck heats up and I start to accelerate there is a knocking/clicking sound, sometimes loud sometimes quite, coming from under the car. This does not happen in any other gear besides from 1st and 2nd. The noise is a whining type sound and stops when I let off the gas pedal or hit a bump. Now its loud and much worse hot. This noise is actually occurring. Spark Knock (Detonation) Posted on January 30, 2013 by adamseer Spark Knock is usually a knocking, rattling or pinging noise which may be heard when he engine is accelerating or is doing work really hard below load (driving up a hill, towing a trailer, passing within the highway, and so on. It never occurs during low rpm acceleration or during free revs. Sharp jerk when gear change from 2 to 1. Otherwise, they are just cheap and [email protected] Other things that can produce a knocking sound when the engine is accelerated hard is crappy fuel. when braking hard you notice vibrations on steering wheel & it pull to ones side Grinding, grumbling sound which gets louder the faster you go Now if the intermediate bearing on O/S driveshalft is worn, it normally causes vibration issues Worn outer cv joints click or knock when you are turning more noticable when on full lock. It sounds like splines skipping. Learn how to accurately diagnose underhood engine noises in mustangs to take the appropriate steps to fix and lower the knocking or banging noises. Noise is only there during acceleration from a dead stop. 11, 2012, 11:40 AM The truck in question is a 1991 Chevy 3/4 ton, 130k miles, great shape and sees the mechanic regularly. within the Drivetrain forums, part of the LSx Technical Help Section category; Well, I finally bought a 1998 SS, but got a few questions. The noise usually presents itself with some mild acceleration in a straight line. com : Car complaints, car problems and defect information. Maybe a bad bearing but the pitch changes with each gear change. Usually, it gets difficult for the car to accelerate due to disruption in fuel transfer. DIAGNOSE - ENGINE PINGS OR KNOCKS ON ACCELERATION. Firt time I took it to the dealer, they didn't find anything wrong. When turning left or right a knocking noise is heard from the front of the car. A humming, grinding or hissing car noise can end up costing you. When I accelerate the car there is a knocking sound that appears to be occurring somewhere around the rear left of the car. With the heat and the conditions, you are dealing with hot fuel (engines don't like that much) and possibly vapor lock or even air in the fuel. My 2005 XC90 recently started making a clicking noise when accelerating. This does not happen in any other gear besides from 1st and 2nd. When I accelerate the car there is a knocking sound that appears to be occurring somewhere around the rear left of the car. Nothing catastrophic can happen to your engine from this type of injector noise. up a hill and I press the pedal a bit too hard. Any Vibration on hard acceleration (without wheel spinning)(this mostly happens in 1st) will be due to worn mounts causing the exhaust manifold to come into contact with the subrame making a loud 'vibrating' 'rubbing' noise. Noise still there. The 2010 Ford F-150 has 9 problems reported for clunk when accelerating. It goes away after I get up to around 5mph. When accelerating (any speed, any gear) I hear a little knocking, almost like noisy valve lifters. DIAGNOSE - ENGINE PINGS OR KNOCKS ON ACCELERATION. 4 eco-tech what would cause it to have a Knocking noise during acceleration but not while sitting idol is running hard, engine. It disappears when I stop accelerating or sharply reduce my acceleration. if the noise is on the right, its a lifter. Also is not the Air pump or PS items Driver reports no problems with developing power. Before we dive into the diagnosis I need to let you know that not all noises are easy to find, some are hidden in components and are not visible. I did an oil change and put some lucas in and it quieted it down a bit but its still there. Recently my car has started to make a whirring noise when accelerating. This is a discussion on Clicking noice when accelerating hard and turning. com : Car complaints, car problems and defect information. Valvetrain looks good on inspection and dyno numbers were good. Average failure mileage is 24,600 miles. The knock sensor is a piezoelectric sensor that contains a piezoelectric sensing crystal and a resister. I have the problem of knock in my engine when accelerating. Low-pitch humming under the car. 4L, 3-valve engine may exhibit a ticking and/or knocking noise after reaching normal operating temperature, or may exhibit a rattle upon starting. I've never noticed this happening before. Otherwise, they are just cheap and [email protected] It never occurs during low rpm acceleration or during free revs. I am getting an odd crackling sound under hard acceleration above 3k rpm. I will admit that I drove it hard on the freeway with my buddies. Truck makes clicking noise when engine is working hard? Jul. 2 TSI DSG - Random knocking noise when accelerating - bolt : Has it got a knock sensor on it, pinking is what it sounds like from your discription, is usually controlled by the ecu,. Its all those torque's when you floor it the engine just wants to escape! Mike clarified this for me today, its usually the offside engine mount. It only made the noise in gear (but at any speed) 1. 08-07-2006, 12:52 AM #2. It sounded just like there was something in the boot, which was moving around, but there wasn't. Detonation/Spark Knock under Light Acceleration April 1, 2011 9:14 PM Some 2010 Equinox and Terrain models equipped with the 4-cylinder engine (VIN W, RPO LAF) may exhibit a detonation/spark knock or rattle noise under light acceleration (1,500 to 1,900 rpm). My T16S has a metallic rattling noise when I accelerate hard in 1st/2nd, seems to come from the passenger side footwell/bulkhead area. Hi all, What is this engine noise that only happens while accelerating on my 2013 Ford Escape? About 91k miles on it. I have a 98 2. I have owned the truck for a number of years and always remember it being there but 3 people have made a comment on the sound in the last couple of months so maybe it is getting louder. 0 jetta 5 speed. If I start off in 2nd the noise also seems to be louder than in any other gear. This reduces power a bit but protects your engine against detonation. It sounds like someone is hitting the frame with a hammer, about twice a second. Recently replaced the primary chain on my 03 Ultra and decided to change out the compensator sprocket spring stack while at it and new bolt also. Hey car experts, maybe you can help me with my problems. Hey guys our 2003 ford f 150 with the 5. Hi Guys, own my GXL now on 7k. If I give it any gas, the knocking sound goes away. If the noise only exists when accelerating and is nowhere to be found when in idle, you can be certain that sort of friction issue is going on. i actually get a similar sort of noise. When my cars temperature surpasses 80*C, the valves begin rattling on acceleration. I can hold speeds at the posted limit (of course) but when I hit the accelerator, I get the noise. So lately I noticed that my car been making these knock like sound when Accelerating from a stop. With 89 octane it hardly ever pings except on very hot summer days under hard acceleration it sometimes pings. by Kyle McFadden. It may have worn enough to need replacing. It occurs on acceleration and can't be heard at idol. I can hold speeds at the posted limit (of course) but when I hit the accelerator, I get the noise. I'm not sure under what topic to post this because I don't know where its coming from. 6CRDI engine knocking noise when warm and accelerating « Reply #36 : April 13, 2017, 01:41:37 » It looks increased from that angle, because both this and the earlier pic i posted, were taken at the same time. When my cars temperature surpasses 80*C, the valves begin rattling on acceleration. I've never noticed this happening before. Otherwise, they are just cheap and [email protected] When I let off the gas and drive "normal" the popping noise stops. Im new to all this cycling so I’m not sure what this noise is but I suspect it may be the bottom bracket. It’s hard to hear compared to any other rod knock videos I’ve seen before on the forum. M of 3 to 3. When I would start up the truck there is also one or two clicks. Please try again later. I just recently purchased my 350z (03 touring 60k miles) and I've noticed a sort of tap/knocking noise when I accelerate. The noise doesn't change with AC cycling on/off either, and goes away after approximately 1 minute. 2000 Audi A6 quattro, usa, automatic (with sports +/-) There is a repedative nocking/thudding sound when I accelerate hard (foot to the floor) the sound seems to be throught the car as if the drivesh. Now its loud and much worse hot. Most likely you aren't getting enough oil or presure to totally stop the knocking. About 1,000 miles after my 10,000 mile service, I have started to notice a rattle coming from the front end upon hard accelerations. It's intermittent but reproducible with enough accelerations. As the revs climb through this range, knocking seems to change pitch, the frequency and loudness remain the same. Whenever i accelerate the noise, ticking/clicking gets louder. We’ll start with the more obvious ones. Only in about 1 out of every 20 pulls. My driver reports hearing a new noise today ONLY if the unit is under fairly hard acceleration. I've not noticed it knocking any worse while turning corners. Im new to all this cycling so I’m not sure what this noise is but I suspect it may be the bottom bracket. Knocking noise from front end, not engine mounts or sway bar links Hello All, It occurs during hard acceleration and occasionally when going over a bump while. The particular Godrej developer is usually serving the highest quality projects to its clients with full dedication Apply For Loans For Unemployed and hard work. I'm having a similar issue. The noise is the of the sort that sounds like a cable rubbing against something. As for the noise, its hard to explain. You could try and check the engine. Engine is DD Series 60, 14 ltr, setup for 525HP/1650 lb-ft torque. The noise may also be described as ticks, taps, knocks or thumps. clunk noise originating from the underside of the vehicle upon acceleration. What causes a hard rattling knocking sound under the hood when you start your 98 ford windstar? Lack of oil, lack of oil pressure, badly worn camshaft or crankshaft or a combination of all the above. Issue has also been noticed when i use to drive on some steep roads or in hilly section of motorway/GT Road. I have upload a video to YouTube and added annotations to demonstrate. A knocking noise can occur from worn engine mounts. Recently, ive had a hard knocking/rattle sound under WOT. It's pretty much plugs into the back and center of the lower intake manifold. I have a 1996 2. I've complained many many times to Acura but they're refuses to do anything about; I don't know what the long term reliability issues are with the vehicle but it is known that engine pinging is damaging to the engine. When accelerating hard i get a loud knock when shifting up and the next gear engages. I noticed today that under hard acceleration there is a strange clunk or rattle coming from somewhere under the truck. To learn more, see reviews below or submit your. on a related note, mines pretty noisy under acceleration too. I changed oil on the car now that the engine has about 500 miles on it and took it out for a drive today. rattling noise when accelerating up hill Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine. It sounds like engine knocking. Though i try to drive maintaining R. The sound could. I've been using Shell V power grade (91AKI) for the past few months. Just replaced front discs and pads on my Astra 1. There are a lot of things that can cause a noise when accelerating. Hi Everyone, 3. But it doesnt seem to make the noise when i have it out of the water and hooked up to the hose. I get a funny noise when I accelerate hard in low gears. When I accelerate and turn the wheel either way to turn, I get what sounds like the noise you would get if you rolled your Rs. While in motion the noise happens when the gas pedal is first pushed, then stops. If you find it hard to discern where the noise is coming from, it probably means it's right underneath the vehicle and the sound is reflected from the road surface. The clearance is reduced by the expansion of the piston skirt as the engine comes up to temperature, and in many cases the noise goes away completely. Knock sound on acceleration I noticed the other day feeling/hearing what sounds like a knock coming from the bottom left of my bike. if on the trailer just pull the plugs to drain the lower unit oil sound travels up the driveshaft and often sounds like engine when it's the lower by checking the oil you'll find out if it's in the lower most of the time and frosty is right if you've just change a prop it may cause noise if not installed propperly. Putting the car in neutral whilst it's moving still presents the knocking when going over road bumps. It will sound like a hard metallic knock (rod) with an alternating and somewhat muffled aluminum (piston) klock sound. Clunking when accelerating or decelerating was created by K. Starting about 100 miles ago I began getting a knocking sound from my left front wheel, which was not very noticeable at first, but now is. The knocks don't seem to match the engine revs when you lift off the throttle and let the car slow down with engine braking only, which is what originally made me suspect fuel system as the cause. Noise appears to be coming from the exhaust/EGR and/or engine control items. You can sometimes hear it when you give it some gas when already moving. It starts around 2000 rpms but then stops around 3000 rpms. - February 2, 2017. It was so slight at first I thoght it was normal HD valve noise. Perform the test a second time with the wheels in the opposite direction. If the noise goes away, then it may be the engine or clutch assembly that is causing the problem. Rattle/Knock noise after hard acceleration??? I have a 2004. 2018 Nissan Sentra knocking noise. If it's a slight noise like you say then the boot could have a minor damage that the MOT tester missed. The noise usually presents itself with some mild acceleration in a straight line. This feature is not available right now. Mechanic's Assistant: Where exactly do you think the noise is coming from? And how long has this been going on? From the engine. Whining indicates a problem with the transmission fluid pump and could be due to a low level or a failing pump. Last week, I put a bottle of Techron in it and it did not help at all. I get a funny noise when I accelerate hard in low gears. could it be the rearaxle is worn. The torque converter turns while the transmission is in park and neutral, therefore, any noise from the torque converter will occur while the vehicle is in gear. Learn more about Volvo XC90 at the Edmunds.