Golf/GTI VII :: Clanking Sound On Boost In Higher Gears
May 2, 2015
I noticed this sound on Thursday, I couldn't replicate the issue at first, but it's getting worse. I can now replicate it almost any time I get into boost in a higher gear (4th, 5th mainly). Partial throttle, usually starts around 3,000 RPMs. Can't quite tell where it's coming from, but it's a bit concerning. I've got 16,000 miles on it with no mods (DSG gti). It'll be going to the dealer next week for sure, but what it could be? Kind of afraid to be driving it, but my dealer is closed until Monday and I wont be able to get over there until the afternoon.
Sound starts at about 6 seconds into the video (it's quiet, but you can hear it well if your volume is up), turbo starts spooling up at about 4 seconds. The car has a slight hesitation when the noise happens, but it's not violent. No CEL.
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The car is a 1997 pontiac sunfire 4 cyl 2.4L.When the car is turned on it makes a sound like the one in the mp3 file that I've attached. Some other symptoms I've noticed is a very slight loss of power while accelerating, and whenever I pull up to a stop and the engine gets into the idle rpm range (800-1000) the oil light comes on and the rpm dips to about 400 and sometimes the engine dies. The engine is also running very very hot, although I haven't driven the car in about 2 months and it's 100 degrees outside, not sure if that's related.
What I have tried so far is replacing the oil and filter, and adding 2/5 a pint of seafoam engine additive for 4 quarts of oil as per the instructions on the bottle. I did this because I suspected it was a stuck lifter, but after driving it for 30 miles with no improvement I'm starting to think otherwise.
As some of you may know I'm not entirely mechanically inclined and that's why I'm here, sometimes I get posts from people who insist I shouldn't be anywhere near an engine but let's try to keep those negative posts off my thread.
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I have been looking around for some boost information. I have come across a few threads that have boost graphs, but the images are no longer available. I have tried to get a hold of some of the posters, but no luck.
I only recently hooked up a boost gauge and have been monitoring my boost more. I had a slight feeling before I hooked it up that I was losing a little boost at higher rpms. Between 4500-5000 my boost drops from 18 to 15 and then from 5000-6000 it drops to about 10. I know it's sometimes normal for boost to drop at top end, but I'm not quite certain it's supposed to be that much.
I installed the Spulen Boost Pipe Kit hoping it may make some type of difference, but it's the same. What it might be? I have checked all my pipes as best as possible, but couldn't find anything.
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I'm fully equipped with apr stage 2 with all the hardware (carbonio intake and full apr turbo back exhaust). So anyways everytime I'm in the higher gears (3-6) I get this rpm lag/stutter, what the issue can be...
Here's a link to the video on YouTube of what's going on [URL] .....
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I have an APR Stage 1 flash done about 3 months ago and I absolutely love it and never had any issues.
I always leave my car in program two which is the 93 octane. I was driving home yesterday and when I was in the higher gears and accelerating in like 3rd or 4th and got the rpms up to 3500 to 4000 the car would stutter pretty hard. At one point it stuttered like 3 times in a row and then the check engine light blinked about 10 times and went away. When I got home I put the car back into stock mode and tried the same thing, but it ran smoothly with no issues.
Experienced this with the APR stage one flash. I'm thinking maybe it could be bad gas or the program didn't get set correctly, but not sure. I am going to put it back into the 93 program today and see if it still does the same thing.
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I have a 2004 jetta gls wagon with a 1.8t. the car ran just fine and had a tune running 16psi strong. I changed the battery in it and now the car wont boost, bogs out and SLAMS hard from gear to gear ( auto 5 speed ). I don't have vag com. I just need to get the car to drive with out it. Even if i get back to factory tune im ok with it.
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I have a golf mk4 1.8T AGU, about one week after i had my k04-023 turbo on and all the Stuff that comes along it started "stall" (don't know if its the right word??) in the High gears, most 5th gear but it first start doing it when i hit boost (3000rpm)
I runs on Stock n75 valve.. I though i could be a boost problem, maybe the Stock system cant handle it? I did install a boost gauge to see if it was the was the problem, and it dont Seem like it. In first it runs from 1.4 bar and drops to 1.2. Same in second and third. But in 4 and 5th it goes to 1.7 bar and drops to 1.4.. I did wonder it maybe the n75 valve cant handle 1.7 bar??
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The car has begun making a horrible clanking sound when going over small bumps. It sounds like it did when the control arm bushings were bad on my old mkIV. There are less than 5kmi on the car, so I can't imagine any mounts are worn out. It's still under warranty, so I know that it's just a dealer visit, but I'm wondering anyway. It sounds like crap.
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For a little while I have been noticing an odd noise from the front driver side tire. About a year ago on two different occasions I heard a sound when I turned the wheel somewhat sharply that sounded like a clacking noise almost like gears slipping. It only happened for a few seconds and stopped but has never done it other than those 2 times that I am aware of. This is my wifes everyday driver, so I don't always hear the noises.
Recently it started making a sound that to me sounded very similar to a wheel bearing going bad. I looked into it a little and drove it and decided to change it even though it didn't have all the "symptoms" of a wheel bearing (louder when turning away from that side, quieter when turning towards that side, play in the wheel). After replacing the hub assembly it didnt make the same noise, but made a different noise that was from the shield on the back side of the rotor rubbing against it. Took it for a drive thinking that I fixed it only to have it start doing it again. After listening closer it sounded like a metal rubbing against metal sound, sorta like a brake pad dragging on a grooved or rusty rotor. I inspected the rotor and all i saw as an issue was on the inner side of it there was a ring of rust on the inner and outer edges, and it was wearing the pad to have beveled edges. I replace the pads and rotor, and it still makes the sound.
I am down to two options that I can think of trying but do not want to really try either one because of the amount of money I have already put into it.
1) I have thought about replacing the brake caliper.
2) I have thought about replacing the CV Axle, BUT the boots are in excellent shape.
It doesn't make the noise all the time, and sometimes it is worse when turning to the right, and other times there is no change regardless of the direction you turn. When it does do it, it feels almost as if the car is dragging and pulls to the drivers side.
I am really at a loss here and don't want to keep narrowing it down because I have misdiagnosed the problem twice now, and was really confident in it being the wheel bearing.
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Car: 2006 Passat 2.0t 6mt - 81k miles. Has lived a grocery-getter life with an occasional romp on the back roads on the off chance the wife and kids aren't with me.
Symptom: Total loss of power (boost?) at at around 3-5k rpm and almost no power to accelerate (10-15sec to get one more mph). Service Engine light has come on twice, but clears with time or removal of negavive battery terminal. At low RPM range power is good, but suspect minor power loss. I'm only partly suspect on that last statement since I only drive it once a week. Idle seems normal, engine sounds normal at idle. Last week I did notice a barely audible whistle when boost is engaged. I have no access to a Vag-Com accept at the dealer.
The car let me down last weekend when I was smoking a jerk in a BMW that wouldn't let me get on the interstate. If it is the PCV and DV, where I can get one? Also, I'm not a tuner. I want OEM performance.
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so there is no visible signs of a boost leak and my boost gauge shows normal vacuum at idle indicating its not a vacuum leak, yet in the higher rpms im loosing boost.
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I have a 2012 R with 85,000 miles, APR chip running 93 octane with a HPFP and VWR cold air intake. I was driving my car today (slow driving on highest) and all of a sudden I felt no turbo boost, and heard a weird sound whenever I hit the gas. Car moved but would not get above 3500 rpms and couldn't really get past 60 mph. Again, absolutely no boost (I have a boost gauge as well to verify).
About to drop off the car at a shop but had a couple questions:
1. If the turbo is blown, can I still drive the car to the shop (not too far) without damaging the engine itself?
2. if the turbos needs to be replaced, what are my options besides getting the stock turbo replaced, without getting some crazy setup? This is my daily driver and I don't want to spend money beyond what I need to get it fixed, but it there is a stronger more reliable turbo for about the same as a OEM, I would want to consider... Also price for OEM replacement??
3. Without the mechanic looking at it, I'm just assuming it's the turbo but what else could be the issue? All the lines looks intact and intake is fitted correctly. I did have issues with my cam follower getting damaged at 45,000 miles (there was a hole in it) and I have been replacing it every 20,000 miles since. Didn't have any issues for 40,000 additional miles, but could damage to that cause turbo failure?
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I just noticed yesterday when the turbo starts to spool up I'm hearing a whining sound as it hits boost. It happens in every gear and under all load conditions, from when I'm cursing around to WOT. I've had Stage 3 installed for a little over 20,000 miles now and this is the first issue I've had. It still pulls just as hard and I'm not throwing any codes, but it is a weird sound I've never heard before.
It also doesn't matter if the car is hot or cold, the sound is still there. I'm not blowing any kind of smoke or burning any oil. What can cause something like that?
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Ok here is my question. I've noticed the power on my car has felt inconsistant for the last little while. I finally got around to logging the car and my boost peaks at mid 20's just over 3000 RPM and then drops fast to between 13-15 psi before I even get to 5000 RPM.
Under full boost I hear a low fluttering sound like the diverter valve opening and closing when this is happening. I also don't get the typical diverter valve sound when shifting when the car is doing this.
I took my diverter valve out and inspected it. I can pushing the piston up very easily with almost no resistance, is that normal? I would think that it should be hard to push the piston up if not wouldn't boost pressure be able to overcome the piston and leak past?
My mods are. HPA tune, HPA catted down pipe, and VWR intake.
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The last couple of days I've noticed a strange sound that come on under boost accelerating at highway speeds. It's a harsh ssshhhh sound that rises in frequency with engine RPM, sort of between a wood lathe and a bench grinder. happens under mid to WOT. It almost seems like I am loosing a little HP as well but I can't confirm that. It's loud enough to hear it in the cabin and with the windows down I can definitely hear it. It's not really fluttering, that I'm used to being on my 3rd tuned 2.0T
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So I took delivery of my ordered PP GTI about three weeks ago, When driving under light throttle, when upshifting or downshifting amongst the first four gears, the car makes a whining/ humming noise from about 1700 to 2300RPM. I lifted the front end of the car to check things out and noticed that the left axle makes some weird sounds. I'm hoping it's a bad CV, issue with transmission (not clutch related)?
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Recently ran into an issue where my boost gauge stopped reading correctly and makes a weird buzzing sound under acceleration. (Whenever I am generating positive boost).
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I'm the proud owner of a 2005 MK4 1.8t gti, and recently it started making a weird sound when it starts kicking in to boost, where it would normally make a whistle sound while the turbo spools up it now makes a sound that reminds me of a supercharged car, it feels like it could be a leak but I don't have an ecl popping up, it does kind of platoes in the powerband, I hope I'm making some sense ..
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I have an auto transmission 98 nissan pathfinder that I bought brand new way back (in 1998 of course) that seems to have problems shifting into higher gears. When I'm going on a level hwy, I'll get going to 70mph and see the engine rev to 4000 rpm's. It'll stay there for a while (minutes to 10's of minutes). Then the engine will shift to a higher gear and the rpm goes to 2500. Then it shifts back so rpm is 4000. This happens back and forth unpredictably. When it's reving at 4000 rpms I tried letting my foot off the gas and the rpm's drop to less than 1000 like there's no load the transmission. Then I press the gas pedal again and the rpm jumps back to 4000 rpm's. I've had the transmission checked a few times and found nothing. I've changed the transmission fluid, had a major tune up, changed the timing belt, but it still happens. People keep telling me it must be happening on a slight grade but, no, it's on a flat road. There is no 'problem light' that appears either (like a check engine light). I've driven many other cars and they don't do this.
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I have a BMW 523i SE AUTO (1997) 2494 Petrol. In auto transmission the gears will shift from 1st to 2nd and 2nd to 3rd but won't shift any higher. In steptronic/manual transmission the gears will shift from 1st to 5th without any problems therefore suggesting that the problem isn't the gearbox itself. Only very occasionally does the shift electronics telltale light appear on the dash, yet the problem with the auto transmission is continuous. A local garage specializing in automatics suggested that it was the gearbox inhibitor. I've today had this changed but the problem still exists.
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I own a hyundai accent 2000 GLS, i have recently replaced the ECM wiring and a brand new ignition coil, however the engine still sputters when i try to accelerate in higher gears, my mechanic told me that the engine mounting bushes need replacement. is it one of the causes? the sparks plugs are new, fuel pump is working fine.
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