Golf VI R :: Inconsistent Power - Low Fluttering Sound Under Full Boost
Oct 16, 2012
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.
View 24 Replies
Advertisement
I have a 2011 GTI, with an apr chip and apr intake stage 1. Car is brand new 4000 miles
When hitting boost in 3rd-6th gear i hear a fluttering sound between 3500rpm and 5000rpm after 5000rpm the sound either dissipates or is drowned out by the motor.
I've done a lot of research around this sound and i havent been able to find a certain answer, it could be compression surge (i wouldn't see why), a leaky DV ( also cant see why because the 2011 has the new revision D piston actuated DV), A fluttering wastegate.
Sage 1 apr chip and stage 1 apr intake...
View 8 Replies
I just replaced my my k03s with another one with only 20k on it. After I did this, I noticed a loud screech sound when in WOT. The screech lasts a little bit after i left off the gas when revving in neutral. I've been doing research on here, and I've read that it could be a boost leak somewhere or even the turbo dying. The shaft play is minimal though.
View 17 Replies
I have a stage 2 2002 GTI with 135k & I'm having an issue once in a while where if I go WOT the car will only boost up to about 5 (around there, don't remember) psi but if I let go and accelerate again, it'll boost normally again.
No lights or CEL comes on when it happens though. I tried searching for any info but not sure what direction to look at. I have a stock K03S, Forge DV, 3" Turboback, Short Ram Intake, FMIC. Bad N75 or DV?
View 1 Replies
Ever since I got my car about 5/6 months ago I noticed it's not getting full boost. when I first got it the stock boost was getting about 5-7 I don't know if that's normal I've read they normally get more. eventually I got my car tuned and it's supposed to peak at 22 psi but it only got to about 13-14 psi. slowly it's been getting worse and my car is getting 2 psi. I've had lots of people tell me it's a vacuum leak. also the bov makes a flutter noise if that has anything to do with it. my intake doesn't make a sucking in noise like most do. The car has been randomly backfiring usually between gears. I just ordered a turbo inlet pipe a breather hose kit and a boost hose kit.
View 4 Replies
Recently purchased a brand new 2013 R. With ZERO mods on it and 5,000 miles, I flashed the car to UM Stage 1. Immediately after flash I get a noise that sounds like a metal clattering in first and second gear from about 2K to full boost. Happens most audibly when the car is cold but is subtly ever present when heated up.
When the noise occurs I feel as if I'm getting half boost or a very inconsistent boost curve. The boost then kicks in after the 3,500k(ish) threshold. On rare occasions, the car will warm up and run exactly as I would expect it too. 1st, 2nd, 3rd all boost very evenly and strong from 0k and beyond with no noise and the car is amazing to drive.
To try and diagnose the issue, I flashed it back to stock and the noise disappears though I can still feel it not boosting consistently. I took it to the dealer (stock) and they said the didn't notice or couldn't hear anything which was what I expected. I'm guessing it is something the with wastegate but I don't know enough to say with any confidence.
View 15 Replies
I installed a VF intake a few weeks back and noticed my car is peaking at around 14-15 PSI max according to my boost gauge, when it used to hit 17 peak. I'm not sure if I may have a leak nor have I checked it via vag-com.
It does feel a bit off, but for as far as I know the gauge could be messed up now.
Just wondering if there would be any immediate signs (sounds etc...) of whether there would be a leak, or what other problems may cause this.
View 2 Replies
The car is an 02 gti. I am having problems at full boost(17 psi) where the car starts to stutter, backfire, and eventually drops to 5 psi. Throttle up to 15 psi is always smooth and there is no hesitation or misfires. It's chipped but I am unaware of which software as it was already on the car when purchased.
What I've done:
Checked for any leaks - none
Cleaned maf
Replaced plugs(0.028) and coils which was needed anyways
Coil harnesses look good
Fuel filter changed
I've read about the n75 but I am not experiencing any surge issues that many have described. I do believe the car is running a little rich because I can smell some fumes but it is very light. Car fires up just fine and idles smoothly.
View 4 Replies
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?
View 24 Replies
I've got a 99 1.8t, and every once in awhile when the turbo starts spooling I hear a fluttering, not sure how to describe it. sort of like when your valves run low on oil and you can hear em tick? Like something is fluttering in the turbo when its spooling, instead of just a steady sucking of air.
View 2 Replies
When I start the car in the morning & step on the gas there is a fluttering noise which happens each time I accelerate until it warms up. I bought the car with 17,000 miles on it and I didn't notice it happening then, but it was warm weather then.
View 2 Replies
Actually, anything more than a half tank of gas will produce a sloshing sound. it's most notice able at low speeds, i.e. going over a speed bump. Also, when in D at idle speed, then hit the breaks, I hear a thud then all the sloshing of the gas. The dealer just told me this is normal. I didn't hear it before the gas tank recall.
View 14 Replies
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.
View 4 Replies
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?
View 24 Replies
So, lately I've noticed a slight fluttering sound in my '08 GS460 when accelerating on the freeway or up a slight incline. It'll kick in around 2,000-4,000 RPM, and it almost sounds like it's coming from right underneath the center console. I did have an exhaust system installed, then uninstalled, so maybe it's something the shop did, but can't be positive whether or not it was there before (always drive with my music on pretty loud).
View 4 Replies
When I started the V^ Passat today it made a fluttering/imitation purring kind of sound...not re-assuring at all. What it could indicate? It only lasted a second then fadded out and ran fine.
maybe a belt tensioner or oil pressure regulator or something like that getting up to snuf?
View 1 Replies
What to hunt down if there is a creaking sound when the car is parked and turning full lock left and right? Sounds almost like the brakes are locked but slipping slightly but I don't have my foot on the brake.
View 7 Replies
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
View 6 Replies
Sometimes while driving if i accelerate the car fully the rpms will accelerate way to fast (at least 2x faster than usual) without picking up much speed at all. I can tell that the car is not going to full boost. The problem is the worst in 5th and 6th gear (when the car is relying more on boost im guessing?) and will happen one day and be perfectly fine the next. I just had the car checked for a boost leak about 3 weeks ago so i dont think its that. The car is chipped with uni stage 1+ (20psi) and has a full 3 inch turboback.
View 15 Replies
I am running the GIAC X+ 93 octane tune with a cold air intake and when i hit full boost it fluctuates from 20 to 15 through out the gear. i am guessing its because of my stock dv. im looking in buying the eurojet dv.
View 13 Replies
My 2010 450h emits a fluttering sound on windy days. The noise sounds like a hvac flap could be vibrating when the wind hits. The noise is not loud by any means, however can get very annoying hearing it everything the wind gusts hit when you are at a stop. The other afternoon I was doing some basic winter prep under the hood and I could hear it under the hood as well.
I got my 2010 as a Lexus CPO early in 2013 and the noise has been there since day one, it's not something that developed recently. The last time I took it in I got a fail to replicate response from the dealership.
View 8 Replies
