Turbo Flutter While Accelerating

Fluttering on acceleration Factory 2. i did a search and others suggested that 314 and 311 will come up if you deleted smog. In either case, you need to pull off the timing belt. If your car loses power while you are driving, there may be a variety of different reasons why. Check this out after dealing with the white smoke, which at this point is your first priority. However, it has its issues. The “flutter” noise reported by many excited enthusiasts may sound good but is actually very unhealthy for the turbo. The consequent back pressure forces the air back through the turbine blades. Whistle from turbo. was traveling approx. This only happens in the lowest gear while accelerating from a stop or a turn. Alternatively you can also calculate the mass, acceleration with the other known values. You could also have a faulty turbo charger, faulty EGR valve, or a faulty injection pump delivery valve. Why would an engine "pop" or backfire while accelerating? This is for a 1992 chevy silverado with a 4. I wonder if this has anything to do with the CAI. The boost holding is what keeps me hoping the turbo is ok. Hi - For the 2005 Tacoma owners (w/V6's), do you guys hear a "fluttering" sound when accelerating hard? I'm not so sure how to describe it, but to me, it sounds like a loose exhaust manifold or (hope not) a hole in the manifold, or some sort of leak in the exhaust. And now today, I was accelerating and it started sputtering real bad and the engine show more saab 9-3 engine sputters when the turbo boost reaches 3/4 on the gauge. I still have the noise. It’s a fairly complex phenomenon which we explain in far more detail here. With the throttle 100% open (foot to the floor) in 2nd, 3rd or 4th gear, and at 2500-3000 rpm's, I get a fluttering noise. This MAC valve is a much faster operating valve that will help eliminate fluttering and allow for a crisper release of your blow-off valve. Sometimes. It is louder on the highway. Re: Strange rattling noise while accelerating I have a similar sound under acceleration, particularly under ~1600rpm, but only in certain gears. 8 and ranked #1 in. In my case I get boost flutter at part throttle acceleration and when I release the the gas. Page numbers referred to in the Nissan 300ZX Service Manual are taken from the 1990 edition in English. I just installed a short ram intake and can hear flutter/surge while accelerating and fully boosting. Picked up a 2017 Denali just over a month ago, been hearing a "fluttering"/rattling type sound when accelerating. Thanks for asking us a question on our article “Why Is My Car Making a Whining Noise?”! I’m sorry you are having trouble with your power steering system, but hopefully it will be an easy fix. Hi - For the 2005 Tacoma owners (w/V6's), do you guys hear a "fluttering" sound when accelerating hard? I'm not so sure how to describe it, but to me, it sounds like a loose exhaust manifold or (hope not) a hole in the manifold, or some sort of leak in the exhaust. Think if you have an air compressor blowing air through a running fan. Most diesel cars (if not all) emit a small amount of black exhaust smoke while accelerating. Just recently our 2009 Precedent Club Cart is jerking while we are accelerating. Whistling noises that occur when accelerating a vehicle are often due to vacuum leaks under the hood. Turbo surge is when the compressor side of the turbo is forced to produce a pressure ratio that is too high for the mass flow going through the turbo. I thought it was an unbalanced tire or damaged rim. 3 is making a whistle noise while accelerating that almost sounds similar to a turbo As it gets louder at shifting points or high rpm's. Flutter / 'Dose' is when you don't have a BOV at all. He said he thought it was the turbo, and took it to two other mechanics for a 2nd and 3rd opinion. Just picked up my new 2012 cruze lt with the rs package 1. 6-liter 4-cylinder engines offered Set to rival Honda HR-V, Mazda CX-3 and Jeep. 3 is making a whistle noise while accelerating that almost sounds similar to a turbo As it gets louder at shifting points or high rpm's. When I step on the accelerator the cart jerks hard at first then after the initial jerk it accelerates and runs just fine. To see how frequently Mazda CX-7 problems occur, check out our car reliability stats. Every time I restart my computer, it turn on by it self. (Page 1 of 2). Hi all, What is this engine noise that only happens while accelerating on my 2013 Ford Escape? About 91k miles on it. Our certified mobile technicians come to you 7 days a week between 7 AM and 9 PM. It's just a single flutter. adding the hybrid turbo map with 1. See the pictures below. In higher traction situations, or with ASR disabled, all of the system’s torque is directly on tap! While the end goal is similar, APR’s torque management system differs greatly from archaic “boost-by-gear” strategies. May 16, 2016. kind of sounds like a bird flapping its wings rapidly but more mechanical. Flutter valve therapy helps vibrate mucus away from airway walls and produces an intermittent acceleration flow. The best way to test the inner driveshaft joint is to find an empty car park then drive slowly on full lock one way and then the other, if the joint is shot you will get the impression that the front of the car is moving up and down. 2) Jet engine sound from the motor / reduction gears from 0-30 mph while you are accelerating (only if you roll down the windows and it sounds like a jet engine at an airport, really high constant whistle) In either case, the Service Center folks can check for you. Turbo Levo takes your ride to the next level, while allowing you to cover more trails than ever before. impreza flutter sound when accelerating, intake flutter when accelerating, my rpms wont go past 4500 wrx, subaru response to flutter, turbo flutter on acceleration, turbo flutter under acceleration, wastegate flutter on acceleration, wrx acceleration flutter, wrx flutter, wrx flutter sound intake, wrx flutter when accelerating. The combined output is 670 horsepower and 663-pound-feet of torque. Delay in acceleration happens when the engine does not get enough power. I can hear it while accelerating when in neutral and when driving up until the 3rd gear. Nissan Sentra Engine hesitates during acceleration Inspection at your home or office. We started GarrettGear so you can proudly wear the Garrett Turbo brand name while promoting Boosting Culture, because everything is more fun with MORE BOOST. 6-liter Endurance gas V8, which can be spec’d in place of the powerful Cummins 5. at times when it happens i try to mash on it and it lacks power and sputters. When the vehicle is in cruise mode or accelerating during Condition A, the PCM turns on the turbocharger bypass control solenoid valve and opens the passage between the charge air cooler and the turbocharger bypass control valve. If you're behind a web filter, please make sure that the domains *. Gas pedal flutters like a spongy brake pedal. First of all, thanks for taking the time to check out my thread / problem :D My car: 2008 FSI GTI w/ DSG, bought it used w/ 95k miles, it now has 98. There are a few different causes between gas and diesel engines. The symptom is more pronounced when the engine is at operating temperature. Heart palpitations may feel different to different people. Hello, I am new here, but just recently purchased a used 2012 Enclave, and I am noticing a slight stutter/shudder during light acceleration. A loud whine or whistle is heard during acceleration and increases or decreases with rpm and load. This is not true. ok guys it started last night while i was on my way to work. ) Upgraded 6mm vacuum. The derived SI unit of Force is Newton (N). Noticed a small sheer in the O2 sensor so I ordered that as well. From what I've read so far it sounds a lot like I have "the bad kind" of compressor surge. Start studying 2019 ALTIMA CERTIFICATION. the darn thing will start to miss or sputter during accelleration and some times it won't do it for a little while after driving for a period. 0 to 100 km/h takes 4. Gas pedal flutters like a spongy brake pedal. It seems to go away when I hit "cruising speed", but can anyone help me out before I ask my mechanic? Is this a maintenence problem, or a REAL problem?. These flow more and allow for higher boost pressures than stock. On one occasion the sputtering was comple. Without a valve to release the sudden buildup of air when you close the throttle, all the air goes back out the way it came - through the turbo. When accelerating, I can hear a fluttering type noise coming from directly under the car. It started off small but has gotten significantly worse. For the last few weeks, I've noticed a whistling sound coming from the front, possibly passenger side, of the car when accelerating normally. If I let go of the accelerator, the noise disappears. 2015 rspec sri turbo resonator delete pipe stock bov stock rubber charge pipe prosport boost gauge while driving home today, i was attempting to get around tampa's infamous slow drivers. Real compressor surge at acceleration example. Do you have anymods such as a downpipe? Also does it happen all the time while accelerating or just feathering it and does it o away under hard accelerating? Sounds like the td04 wastegate flutter they all have it and some are more pronounced then others and sounds like a tapping almost like a exhaust leak. It's a weird pulsing feeling. This MAC valve is a much faster operating valve that will help eliminate fluttering and allow for a crisper release of your blow-off valve. By continuing to browse this Website, you consent to the use of these cookies. When accelerating I hear a noise from the under hood, it's hard to explain but it sounds like a faint air leak that keeps capping off almost like a flutter and can only be heard when passing a building with the windows down. If the flutter occurs at every deceleration, under load or at upshift on acceleration, suspect a sticking VGTurbo actuator or turbo vane ring. The difference is that compressor surge occurs while you're on the throttle and compressor blades in the turbo stalls. When you let off you may hear the fluttering depending on the Recirculation/BOV you are using. We were honestly a little surprised by the flutters, whooshes, and psshh noises that come with the CorkSport SRI. I have looked for posts on here and can't seem to find a solution for my problem. How can I fix the sputtering that occurs when accelerating at low rpms? 6 Answers. If I let go of the accelerator, the noise disappears. The combined output is 670 horsepower and 663-pound-feet of torque. Turbocharger lag (turbo lag) is the time required to change power output in response to a throttle change, noticed as a hesitation or slowed throttle response when accelerating as compared to a naturally aspirated engine. With the BOV off it did the same flutter just a bit louder and longer. I may need a new one. The rear motor drives the wheels through a two-speed gearbox that uses a lower ratio for faster acceleration, and a higher gear for more energy-efficient high-speed cruising. Sound went away for abit, but recently popped up again. Like if I took off from a stop, everything was normal until my speed started catching the fuel I was applying, then it would sound like an AK47 going off under my hood. 2009-2016 Audi Acceleration Issue. While the Taycan Turbo and Turbo S have similar rear powertrains, the front motor carries an inverter rated at 600 amps on the more-powerful car, but only 300 amps on the Turbo. Exhaust smell in cabin while accelerating hard??? - posted in Virtual Mechanic: I have a bad smell like exhaust smell in my car when i accelerate hard. while driving 45 mph, the vehicle lost power, came to a complete stop, and the rear wheels locked up. While this article concentrates on the 90+, principles outlined here also can apply to earlier Z models, and to other electronically managed cars. While the pan is off, we tighten the bolts on the transmission valve body to the specified torque. If it particularly happens when you accelerate the engine, you can pin down the problems on common failures of several components. Do you have anymods such as a downpipe? Also does it happen all the time while accelerating or just feathering it and does it o away under hard accelerating? Sounds like the td04 wastegate flutter they all have it and some are more pronounced then others and sounds like a tapping almost like a exhaust leak. 2) Jet engine sound from the motor / reduction gears from 0-30 mph while you are accelerating (only if you roll down the windows and it sounds like a jet engine at an airport, really high constant whistle) In either case, the Service Center folks can check for you. Featuring authentic sounds recorded from over 16 real turbo cars iBoost will amaze you with how realistic it sounds as you drive. 11 Causes of a Vehicle Losing Power when Accelerating. A slight jerking motion in the front while accelerating is possibly torque steer. I just replaced the engine in my 1986 Jaguar xj6 and picked up the car today. org is looking into reports that certain Dodge Ram vehicles are experiencing potentially dangerous acceleration problems. Don't test fate because fate will always win. Now, with +/- 20,000 additional miles there is smoke coming from the exhaust again but only after acceleration. I believe I have the same issue with a 1999 I just bought a week ago. I know open throttle compressor surge (flutter at wot) is super bad for your turbo but from what I've read it can be from the traction control system trying to get/maintain traction under hard acceleration. Scraping Noise While Accelerating From Stop(Trans going out?) Over the past two months while accelerating from a complete stop i have had a scrape type of noise that i can feel through the floor. Nissan Sentra Engine hesitates during acceleration Inspection at your home or office. Just recently our 2009 Precedent Club Cart is jerking while we are accelerating. Mercedes Sprinter Turbo Blown – Symptoms Posted on by This will not be a lengthy post as turbo’s are covered in many other areas of this site, but I did think it would be useful to show with a few images of what the symptoms of a blown turbo look like and to back it up with a little additional text. Recently, when driving, I have had to rev the engine more and more in order to maintain a normal acceleration. A clogged air filter or fuel injector can be issues that will affect your vehicle's acceleration. The Cayenne Turbo S E-Hybrid is the most powerful and fastest Cayenne yet. And while this may also have the effect of reducing the risk of flutter, it's my understanding the reason behind this requirement is that turbine powered airplanes generally have the ability to exceed Vmo (top of green arc) in level flight over a wide range of altitudes. 5 bar boost or greater the engine "sputters" and does not accelerate hard or smooth. In terminal, run the flutter devices command to verify that Flutter recognizes your connected Android device. 6 seconds, while the Turbo does the deed in 3. Replied by EricTheCarGuy on topic Engine knock when accelerating. It has been regularly maintained by dealership and run on Shell V-Power 93. Replied by spelunkerd on topic Engine flutter while accelerating Can you be more specific about the 'flutter'. 4 turbo has just thrown the under boost code p0299 but when driving there is no boost at all and at medium to heavy pressure on the accelerator it’s bogging down and struggles to move and I can’t find any thread on here to help explain the issue. Dirt and water can. It does NOT occur if I rev the engine while in park. Today I went to autozone and they did a scan which came up with a P0301(only code, supposedly a cyl-1 misfire). Whining noise while accelerating - 2013 ATS 2. 2L and 5 speed tranny. Hi Guys Drove my wife's' Qashqai for the first time for ages the other day only to find it had very poor acceleration and if it were a petrol I'd say it also had a misfire associated with a bad plug - and only happy to trundle along the motorway at 70 ish and at 2-3k rpm. If a vehicle is struggling to get enough fuel, the car will jerk when accelerating. Even when laying upside down as somebody else drives, I can't tell if it is behind the glove box or in the kick panel area. Today while accelerating, the turbo was spooling then the noise went away like within 2 sec. This is NOT turbo flutter/chatter. It seems that while accelerating between gear 2 and 3 when the turbo is noticeably kicking in I hear a noise from from passenger side of the engine that sounds similar to a pile of leaves crackling or a lawn spigot. I had a friend look at it and he thinks the turbo is bad. Why would an engine "pop" or backfire while accelerating? This is for a 1992 chevy silverado with a 4. Turbo Flutter. The Sputtering Is it always when the car is under a load? Does it do it also while your "feathering" the gas? My 94 did that when I pressed on the gas pedal to much and didnt have the RPM's to back it up. When you let off the throttle while accelerating under load it goes wha-pah-pah through the intake/air cleaner. I also didn't hear the same SHH SHH SHH noise but the conditions where not quite the same as the first time. While accelerating. Hello, I have an issue with turbo flutter when accelerating (usually under load). While still the same as compressor surge, since turbo flutter doesn't occur while the turbine is loaded (exhaust spinning the hot side of the turbo), the damage to the bearing is not as bad, if not negligible. The Model S has better acceleration, a higher top speed, and will very likely have a longer range. Real compressor surge at acceleration example. 5l outback 239,000 + miles , about a week ago the car started to vibrate while accelerating. Just a thought but you might want to check your brake servo - if you are pulling brake fluid through into the inlet manifold (under hard acceleration) this can give the white smoke you describe - not sure if this is a common problem with the Esprit but certainly is with the Elan with a remote servo once that has started to leak. 2) Jet engine sound from the motor / reduction gears from 0-30 mph while you are accelerating (only if you roll down the windows and it sounds like a jet engine at an airport, really high constant whistle) In either case, the Service Center folks can check for you. You could also have a faulty turbo charger, faulty EGR valve, or a faulty injection pump delivery valve. I've purchased a LT Malibu less than 24 hours ago and I have a concern. seems to do it when im in drive and got my foot on the brake, like if im waiting at traffic lights. Virtual Customer Premises Equipment (vCPE) help providers to deliver network services such as routing, NAT, security, and VNP connectivity to enterprises by using software on COTS server rather than dedicated hardware devices. My car is 2011, and worried about the turbo. Learn vocabulary, terms, and more with flashcards, games, and other study tools. If a vehicle is struggling to get enough fuel, the car will jerk when accelerating. Rpm flutter while coastin to stop. I took it into the dealership but was unable to replicate the noise so they weren't able to determine what the issue might have been. The VW diesel (TDI) engine is one tough engine capable of going 500,000 miles when maintained. Here is a reference document, How you can setup Device/Simulator to run your application. Does anyone know how i can fix this or what the problem is. I have a theory on why an automatic Audi 500 had so many accounts of the unintended acceleration problem based on my own car that had 24,000 original miles. The fluttering sound only comes when I decelerate. If the flutter occurs at every deceleration, under load or at upshift on acceleration, suspect a sticking VGTurbo actuator or turbo vane ring. Yes, wheel bearings noise/vibration could remain the same immediately after accelerating or while coasting but should change as speed increases or decreases because the wheels will be turning faster and will have an effect. (accelerating up a grade on the highway) it is much milder. I can hear it while accelerating when in neutral and when driving up until the 3rd gear. What is causing it? I have a 1983 Citroen 2CV. the most likely culprit is a dirty or "worn out" Mass Air Sensor (MAS). When people think of turbocharged cars, one of the first things that comes to mind is the sound of turbo flutter, that fluttering/chattering sound which happens when the driver backs off the throttle in a hurry, such as when changing gear. I sounds like grinding metal. Stomping on the. Basically, that flutter is the sound of a turbocharger trying to push air but. I have looked for posts on here and can't seem to find a solution for my problem. 2017 Porsche 911 Turbo S Cabriolet Road Test. Only happens under acceleration. Car is a 53 plate with 112k on the clock. After having put in a new Garrett turbo, new intercooler hoses (silicon) and cleaning the intercooler I am still getting a squealing/whistling noise when I accelerate. That's actually called throttle response, and it exists in normally aspirated cars as well as fo. You have to be careful fitting dump valves to a TT as if you dump all of the pressure the ECU will see the loss of air and you'll end up with the engine. I've heard this noise before when I let off but not when I'm WOT. For this feature, SSD drives need to be installed to enable this function. Turbo Flutter / Compressor Surge Posted on August 8, 2014 by ksmotorsport Compressor surge is a phenomenon where the compressor cannot increase the pressure of the air it is pushing and results in the reversal flow of air through the compressor. Replied by spelunkerd on topic Engine flutter while accelerating Can you be more specific about the 'flutter'. To repair this you need to remove the turbo and have the inside cleaned up,if it is rusty and pitted then the turbo must be replaced. A little less detonation on acceleration. That noise may tell the world you have a turbo, but the truth is, the sound signals a problem. After heavy acceleration however, the massive amounts of compressed air leftover in the intercooler piping (since it sucked in so much on open throttle) will reverse out quickly through the still spinning turbine wheel resulting in more of a whoosh sound with a slight flutter instead. Hesitant Acceleration Due To Fuel Supply. Discuss Turbo fluttering at the Focus ST General Discussion Flutter when you let off or while your accelerating? Sent from another galaxy. A few days ago I noticed that my Laguna 2. In many cases, when you experience this feeling at night, it is simply because you are more aware of it at rest than when you are busy. After getting the car back yesterday from its first service, I have noticed a fluttering sort of noise coming from the turbo area of the car front driver side. did u check for boost leaks. 6 requires constant acceleration on gas pedal through the gears until desired speed, my 04 Titan you could hold the RPMs steady and let the truck speed up to catch up. Gets slight smoke when just accelerating normally and smells a little rich in the garage. BTW, a turbo about to fail will definitely change the noise it is making becoming more harsh. When my 1984 automatic Audi 5000 is started above 65 degrees while the engine is cold it would go through this mild engine surge cycle before the idle stabilizes. The symptoms are a "stumble" and what feels like an erratic loss of power when cruising around at partial throttle. 6bolt stutters while. yeah, mine does the flutter a little bit as well under boost. Hi Any joy with this yet? 2002 trafic, same prob as you started with a stutter between 2500-3000 revs ranault changed fuel filter when i got it back no power on acceleration til 3000 revs, have done all elect tests replaced power boost sensor, cleaned egr valve, stll no luck, new guy has tested fuel pressue and air flow and now says he thinks it may be fuel pump or turbo or both if this keeps. Here is a reference document, How you can setup Device/Simulator to run your application. I can hear the surge during 3rd gear drops (I'm definitely over 3k rpm at that point). Real compressor surge at acceleration example. Rpm flutter while coastin to stop. It's hard to explain what I'm experiencing but it feel like I am driving over a bunch of speed bumps. It could also cause a loss of power and. Noise only happens when driving. I hate mouse acceleration in any situation. Plasma Wakefield Acceleration. Flutter Noise on Deceleration: Some 03-06 trucks may exhibit a fluttering noise from the air filter assambly on deceleration. Took the car to Audi and checked the car and seems fine. Sure, it moved freely on my bench when at room temp but not when hot and attached to the turbo. There is a foam grommet there that may have worn out, and the intake is vibrating against the hole. Car is a 53 plate with 112k on the clock. The first substantial Tesla Model S versus Porsche Taycan comparison has hit the internet, and it shows the Porsche crushing the less expensive Tesla in build quality, handling, and even acceleration. The 2016 Cadillac CT6 has a bit of giddy-up thanks to the twin-turbo V6 LGW engine. This is normal. I Found Out How To Make My Turbo Whistle gave a turbo whistle upon accelerating, which I thought was normal. Could the transfer case make any fluttering noise on acceleration?. This does not occur always, but about 99% of the time. Whistling noises that occur when accelerating a vehicle are often due to vacuum leaks under the hood. It sounds like something in the engine is fluttering. 5 bar upto 4000 rpms or when the rpms are above 4000 and full boost (1 bar) it is smooth and accelerates appropriately. Hey, so recently I replaced the turbo on my 2013 Ralleye and somehow, don't ask me how, the. As I keep accelerating, while maintaining the lower 10psi, the fluttering sound stays the same speed/volume until I let off or stand on it. A few days ago I noticed that my Laguna 2. I have a theory on why an automatic Audi 500 had so many accounts of the unintended acceleration problem based on my own car that had 24,000 original miles. 5" fmic, Catless DP, 3. As the price of fuel rises higher, many wish to know how to get the most bang for their buck while at the fuel pumps. When I got back I checked that the vacuum was applied to the turbo, which it was indicated by the vane lever/actuator in the down position, however when I got someone to increase the revs past 2000 there was no movement on the actuator. This condition is most often the result of a loose clamp/hose at the turbocharger compressor outlet, charge air cooler (CAC) inlet, CAC outlet or at the intake manifold. Car is a 53 plate with 112k on the clock. Think if you have an air compressor blowing air through a running fan. 1999 Dodge Ram 1500 5. This can cause transmission failure. i pulled the codes today and came up with 565, 314, and 311. 7-liter twin-turbo was tuned to optimize torque. Worn drive axles will cause vibration under acceleration as well. A car's fuel system is made up of many components, any of which may cause a car to stall under acceleration. the ticking/flutter noise when accelerating and running - cause: front prop shaft bearing walked back and caused noise from front. Start studying 2019 ALTIMA CERTIFICATION. I don't hear this noise when parked and revving the engine. i have no lights on the dash showing anything. When it does happen, it seems to be around 20mph and between 1500 - 2000 rpm. It's most noticeable when pressing the accelerator, and seems to increase and decrease with the RPM (starts slow at around 1500, increases in frequency as rpm goes up). Turbochargers always need to spool up when you hit the gas, then you feel the acceleration when the turbo's start to kick in. At first, I thought maybe the clutch. Whine noise under acceleration Discussion in 'Engine, Drivetrain, Fuel and It is a bit intrusive when accelerating but at tickover and cruising I don't hear it. Turbo Flutter / Compressor Surge Posted on August 8, 2014 by ksmotorsport Compressor surge is a phenomenon where the compressor cannot increase the pressure of the air it is pushing and results in the reversal flow of air through the compressor. Is this compressor surge? This is my first turbo car, so I'm not sure if this is normal or if I should be taking a trip to the dealer. Does that sound right and if so what exactly will I need? Strange rattling/fluttering noise when accelerating. Noise when accelerating Hi all, after some advice on a noise coming from my defender 300 tdi when I accelerate. Twice now, I have lost power while accelerating form a low speed of less than 10MPH in our 14 MDX with less than 1,300 miles on it. People who sleep on their left side or back may inadvertently put pressure on their vagus nerve. Take it off - two bolts and a hose clamp - drive around and see if it still makes the flutter noise. The fluttering sound you're hearing under acceleration under full boost at low'ish RPM is your wastegate controlling your boost. Think if you have an air compressor blowing air through a running fan. Hi - For the 2005 Tacoma owners (w/V6's), do you guys hear a "fluttering" sound when accelerating hard? I'm not so sure how to describe it, but to me, it sounds like a loose exhaust manifold or (hope not) a hole in the manifold, or some sort of leak in the exhaust. I first noticed it when I would speed up on the freeway. When the boost is below. as of today the stumble has become more promenant. Always begin replacing the easiest and cheapest part first, which is the fuel filter. The best way to test the inner driveshaft joint is to find an empty car park then drive slowly on full lock one way and then the other, if the joint is shot you will get the impression that the front of the car is moving up and down. Page numbers referred to in the Nissan 300ZX Service Manual are taken from the 1990 edition in English. 2007 CX-7 GT with 50K Recently had a problem with the engine surging/losing-power during acceleration. It's most noticeable when pressing the accelerator, and seems to increase and decrease with the RPM (starts slow at around 1500, increases in frequency as rpm goes up). As I'm cruising around 60 mph or so, and. This is for a 1992 chevy silverado with a 4. This most often seems to happen between 1500 and 1750 RPMs and is just before shifting. My truck started to flutter while accelerating. Picked up a 2017 Denali just over a month ago, been hearing a "fluttering"/rattling type sound when accelerating. When accelerating, I can hear a fluttering type noise coming from directly under the car. My Mustang making a weird noise when accelerating? turbo filter starting going bad it would make a whistling sound while accelerating, and if its not the turbo. In normal conditions the tires will only slightly break loose under full acceleration, resulting maximum acceleration. A little less detonation on acceleration. 2) Jet engine sound from the motor / reduction gears from 0-30 mph while you are accelerating (only if you roll down the windows and it sounds like a jet engine at an airport, really high constant whistle) In either case, the Service Center folks can check for you. If I get the turbo fixed is the same thing likely to. Doesn't seem to have affected power but had the car for 5 years and I haven't noticed this before. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. It also closes the passage between the intake manifold and the turbocharger bypass control valve. Wondering if this might be a leak in the exhaust near the turbo? It's different than the normal turbo whine and is much louder and more noticeable. Turbocharger lag (turbo lag) is the time required to change power output in response to a throttle change, noticed as a hesitation or slowed throttle response when accelerating as compared to a naturally aspirated engine. This might be good info for anyone trying to diagnose a surging/dieing problem, more commonly associated with the 03/04 trucks. CPU acceleration status: HAX kernal module not installed. I took it for a short drive afterwords and I now hear a fluttering sound under acceleration. Noise goes away when not accelerating. libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, AVX2, NEON, AltiVec) to accelerate baseline JPEG compression and decompression on x86, x86-64, ARM, and PowerPC systems, as well as progressive JPEG compression on x86 and x86-64 systems. So I added injector cleaner to my has thinking it was bad gas or something. (Page 1 of 2). it sounds like its coming from the front right of the car. I have a 91 turbo stock (except for EGR block off plates) and I have had poor acceleration/boost leak for some time now. A "flappy" noise at highish revs/full throttle is a sign that the first exhaust box (oxidation catalyst, containing a fine ceramic honeycomb) has become blocked. If this is happening during acceleration, while your accelerator is depressed what you're hearing is WASTE GATE FLUTTER, caused by your wastegate opening and closing very quickly in an attempt to regulate the boost. A slight jerking motion in the front while accelerating is possibly torque steer. Re: Turbo flutter while accelerating I picked mine up the other day after the recall reflash, and it did the same thing. Anyone have any ideas?. Let me start by saying that the only change between when my car was working fine and the problem at hand is that my car got an oil change and a change of spark plugs. My dad has a 2007 3500 with a 6. Let us know what they find. Also please check out the statistics and reliability analysis of Mazda CX-7 based on all problems reported for the CX-7. Usually in 4th gear. the problem started intermittantly. Mercedes Sprinter Turbo Blown – Symptoms Posted on by This will not be a lengthy post as turbo’s are covered in many other areas of this site, but I did think it would be useful to show with a few images of what the symptoms of a blown turbo look like and to back it up with a little additional text. The base 2016 Porsche Panamera comes with a 3. I know open throttle compressor surge (flutter at wot) is super bad for your turbo but from what I've read it can be from the traction control system trying to get/maintain traction under hard acceleration. We were honestly a little surprised by the flutters, whooshes, and psshh noises that come with the CorkSport SRI. The VW diesel (TDI) engine is one tough engine capable of going 500,000 miles when maintained. Fluttering and bogging can be caused by a wide variety of issues. The phone without GPU Turbo lasted for 4 hours while the one with the update managed half an hour more of screen on time. Currently I'm running livetune cobb stage 2 93 octane. It’s a fairly complex phenomenon which we explain in far more detail here. This is my first turbo'd car so this stuff is all totally new to me. Doesn't seem to have affected power but had the car for 5 years and I haven't noticed this before. First of all, thanks for taking the time to check out my thread / problem :D My car: 2008 FSI GTI w/ DSG, bought it used w/ 95k miles, it now has 98. 0T either the air charge or exhaust feed of the turbo system? With it in park and AC on to provide a little more. This MAC valve is a much faster operating valve that will help eliminate fluttering and allow for a crisper release of your blow-off valve. Surges When Accelerating. the plugs and wires.