Dmf noise when cold. As can be seen in the attached vide...

  • Dmf noise when cold. As can be seen in the attached video, the outside temp The DMF noise is a heavy knocking noise, it may do it all the time or it may only doit when the starter engages but without hearing it in the flesh it is going to be just guess work IMHO. Not a Whats the chances of a new DMF being faulty from new? Also the noise goes before you get to any garage as the noise goes when the engine gets warm so every garage is like what knocking? Mine starting making tapping/clicking noise coming from flywheel area at about 117,000. Might just be how it is and you never really noticed it. However, the noises are actually caused by sources of error in the periphery of the DMF. It only has 25k miles, still under warranty. Up today we're doing a noisy/knocky DSG dual mass flywheel or DMF. Jun 3, 2025 · I've recently noticed a knocking/ tapping coming from the engine which seems to be more prevalent when cold. I've recently noticed a knocking/ tapping coming from the engine which seems to be more prevalent when cold. Here in Texas, we have a few Interstate Highways with 80 MPH speed limits, most of the noise I hear is from wind. It goes away when the engine has warmed up! It seems to be coming from the right hand just out of curiosity, aside from horrifying whirring noises and potential clunking, what are other symptoms people with bad dual mass flywheels have people seen? Currently experiencing the dreaded DMF noise and similar symptoms on my 2013 A3 w/CBEA and DSG. It only happens at idle as well. Worn-out accessories like the water pump, power steering pump, alternator, and exhaust manifold can produce startup noise that often sounds like a knock. If I use my block heater, no noise or if the ambient temperature is above freezing, no noise. 658 5th gear which also helps lower interior noise. My clutch seems to be holding up ok so far- but I have a couple symptoms that I think might be associated with a failing DMF. Here’s what to do when your dual mass flywheel is noisy and rattling. Drivers may feel unusual vibrations in the cabin or hear noises that weren’t present before. If I put in gear or increase rpm noise goes away, it also goes away completely after DMF should probably go soon, the car does have like 136k miles though I'm not sure why it would make a hissing sound - sorry, I don't think I mentioned that the hissing is coming from the front! The noise does sound just like failed flywheel so hold out hope for yours whats the mileage? Mines 62k now apparently the fly wheels do fail commonly so maybe worth a try with yours? I have a problem that has been getting worse since I've had the car (3 years). It doesn't seem to make any Seems to make the noise worse when it is cold and idling in neutral (clutch out). Sounded like a chickety, chickety, chickety noise. Distillation is therefore conducted under reduced pressure at lower temperatures. A fl If the DMF has done 80,000 miles are you going to do another 80,000, probably not? So it worth the extra noise/harshness. VW JETTA TDI DMF NOISE TDI BAD DUAL MASS FLYWHEEL DMF Check Out Our Website: http://mechaniclifestyle. Any workshop can check a dismantled dual-mass flywheel with simple tools. It's a PD140 (2007) with 130k on the clock. 1. It doesn't do it all the time, just here and there. I've got a 2006 2. I also have 1:0. I also bought mine from Cascade German in OR. Vid below captures the noise accurately (especially at very end), only occurs during cold start, in park. Kind of a "toc-toc-toc-toc" sound. It has a noise that I am wondering about. I would welcome any advice on where to start looking for the most likely cause. It plays a vital role in reducing Since they don't make any noise or vibrations, dual mass flywheels seem to be a superior choice than single-piece flywheels. 2014 NMS Passat TDI Cr 2. The DMF undergoes decarbonylation near its boiling point to give dimethylamine and carbon monoxide. It's not severe, but with an RMM it sounds really gnarly. Now, why a DMF? Noise, vibration and harshness. Diagnosing a failing dual mass flywheel can be a little tricky since most of the symptoms could also mean issues with the clutch itself. The car is a 2006 Jetta TDI with DSG. There is talk of juddering in low gears/ metallic rattles, while other say theirs failed without any warnings signs. I've seen some older posts on this forum about ticking/ tapping noises on the driver side on the 2. 0T makes a groaning/moaning sound when it is cold (engine) - especially in cold weather. #VW #DMF Clutch Diagnostics - Stress tests on the flywheel (DMF). My DMF (Typical DMF rattle/vibration) makes alot of noise on cold start but once the engine warms up, it quiets down alot. When push starting a car in any gear you reverse the torque on the DMF and could surely damage the spring set, if it is an ailing system. This noise is different from common rattles or loose parts — it has a more deliberate, heavy character that typically originates from the bell housing area. Here's a video of the noise. M2 Technical Topics > S55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > DMF (Dual Mass Flywheel) issue or hydraulic valve lifters? My 2016 van with 11k miles had a new DMF at 2yrs11months under warranty. A CAUTION notice denotes a haz-ard. Hey guys, in this video I'm showing a symptom of a failing Dual-mass Flywheel. Noise. A6 / S6 (C6 Platform) Discussion - Dusl Mass Flywheel Replacement?? - Hi, I'm having more problems with my A6. Once revs settle down from 1100rpm to just over 900rpm. I have a 2008 Rabbit, 26k miles that I love, but I've noticed what I think is a new noise from the drivers side of the engine compartment. The clutch on my 2. Hi, I have a 2010 JSW with the 2. It sounds like slight engine knock at idle and when first starting out in first gear or reverse. https://vid. Possibly something to do with DPF ? See attached screen shoot from ForScan. Rattled when cold and in neutral. Mechanic says the car is completely fine and the only notable thing to him is the Aircon compressor making some noise when cold. After some research on this forum I suspect it may be the DMF, due to; - Noise more prevalent when cold - Noise goes when clutch is depressed - Noise louder on passenger. What Causes Dual Mass Flywheel Failure? DMF failure symptoms – what drivers commonly notice The first indicators of DMF issues are often subtle, but they become more noticeable as the condition worsens. :( It appears to be coming from the DSG gearbox and only occurs when in Park or I *think* the DMF sound is mostly the clack-clack noise we get from engaging gears, or when coming back on-throttle after coasting. Thanks, that’s interesting at such low mileage so it’s definitely a possibility then, was it a faulty part? Yes it does sound like like that. To keep the component efficient and extend its lifespan, nevertheless, a decent driving style is required. commore R32 Zee 1064 posts · Joined 2013 #21 · Apr 6, 2014 Sounds like Dmf pal I ve got a rattle on my manual when cold is load & when warm not as load also when I dip clutch no noise yours a dsg best to stethoscope so you can get closer to the noise & location Reply Like ad_182_uk 1491 posts · Joined 2012 Hi guys been a while but the car has been a dream of reliability. Shortly after it started, this noise also started. Rattle after start in engine bay? All times are GMT -5. It certainly sounds like it could be the DMF based on some of the youtube videos I saw while researching my DMF. It came and went on it’s own, it was not constant. It is important to know the right methods. On cold start when the car has been sitting for 8+ hours, I get a strange rattle sound Hi I see a lot of discussion on here about the DMF as being a common point of failure, but very little about what the early signs are of it failing. Sep 27, 2025 · Hey guys, noticing a bit of chatter from the left side of the car on cold start. But to me it definitely sounds like a bit of DMF chatter? Am I crazy? Have a listen. Please listen to the attached mp3 file recorded from the front under the bumper below the engine/gearbox. On cold starting there is usually a random chugging/knocking coming from the engine bay. I've since put about 13,000 miles on my new DMF with good results. 0 Engine, code CKRA, and 03L on the engine, it has a 6 speed dsg dq250 02e. The Golf starts and runs fine, except at idle, and then there's a lot of vibration. I am 90% sure that it is the DMF going south. It calls attention to an operat-ing procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. I did however watch the bottom dogbone engine/transaxle mount move quite a bit. So just wondering what Here's a video of the noise. My next thought was to attempt recrystallisation in DMF, but since even hot DMF does not fully dissolve the solid I don't know how suitable this is. After reading through I have decided that an SMF upgrade is for me but I dont want to do it prematurely I have an 07 with 135k on it, Stage 2 for the last couple thousand miles. Hearing this noise during start-up is a clear indication that the DMF needs attention. Lots of good threads here about it, just search DMF. I had rattling at idle, replaced DMF, problem solved. May 16, 2025 · Drivers often describe the sensation as a deep mechanical thud, especially during cold starts or when the engine is under load. Plus a DMF can be lighter, making the engine feel sprightly. It seems to be coming from the front of the engine. Is this the dreaded DMF noise? Started the car after work today and it cranked way longer than it usually does, and it was not cold outside. My MY2016 T6 140PS 7 speed DSG has started making a clanking noise from the engine/gearbox when cold. If you hear a lot of rattle or banging sounds from the Understanding a vehicle's dual mass flywheel symptoms will help you handle a sudden DMF failure. The clatter sound happens because there is too much play in the flywheel. It doesn't seem to make any The noise does sound just like failed flywheel so hold out hope for yours whats the mileage? Mines 62k now apparently the fly wheels do fail commonly so maybe worth a try with yours? A dual mass flywheel (DMF) is a critical component in many modern vehicles, especially those with manual transmissions. It was only really noticeable in park and most noticeable when it was cold. The 04 in my sig has a rattling/knocking sound coming from the clutch area when the engine is at idle. 5L, but I don't think they were It sounds like your DMF might be on its final leg. This is a wear item which was noisy around 165k miles, although i waited until about 192k The only solvents that seem to dissolve the product are DMF and DMSO, and even these demonstrate only partial solubility even when heated. Its been doing this all winter, did not previously. Last 3 - 4 weeks she has been a bit clunky sounding with the clutch dissengaged, im assuming from what i read that its the DMF. Replaced the engine mounts as they were getting tired, and it got a Evening all. Unusual noises when starting the engine, when traveling or when switching off the engine are often associated with a possible dual-mass flywheel (DMF) defect. The time now is 07:54 AM. Searched a bunch but couldn't find a discussion with the same scenario (and with good video audio). true My dmf makes some noises on cold starts but I rev it to 1000 rpm on cold starts and the noise goes away. Not looking forward to replacing it. Would you suggest this noise is DMF failure? It had one at VW approx 30k ago, DSG, doesn’t have any effect on function of the van as yet, bit strange if it’s going already! I can’t see a failed DMF causing this rough running, it’s a misfire, if there is any DMF noise it’s as @mmi stated in post #10. It goes away when I push the clutch in. Another frequent culprit for cold start engine noise, are accessories that are attached to the engine, that get mistaken for engine knock and noise. My advice is not to run the engine at all in this condition, I don’t see much improvement over the length of the posted video. 5L gas engine and manual trans. So I lit a candle. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met. I have a question for you experts out there. 0l Auto multitronic with on 50k miles on the clock. me/98bv It sounds like a rattling "pebbles in a dryer" sound, just like a DMF failure is described. Quite a loud off putting ticking metal noise. If you have excessive rattles and noises coming from the flywheel unit, that almost always means that the dual mass flywheel is starting to fail. How long do I have until I have to replace the dmf ? Clunking or Spring Noise While the Car is in Neutral Irregular clunking noises while the vehicle is in neutral, often referred to as the "DMF death rattle," signal potential failure. Some of the signs of a defective DMF and the way out have been explained in this article. After some research on this forum I suspect it may be the DMF, due to; - Noise louder on passenger side. When the car is warm and I start it there is a lot Just had a look at my daughters Kuga which is pinging up an Engine Malfunction warning. A definitive assessment will involve visual inspection of all components, but if you have any of these issues, then your flywheel could be the culprit. What I get is a quiet but very mechanical wah wah wah rotating whirring sound when coming to a stop. Since they don't make any noise or vibrations, dual mass flywheels seem to be a superior choice than single-piece flywheels. When the car is cold everything seems ok, it's not 100% smooth, just a slight judder. What Cars Are Fitted with DMF’s? Mainly diesels, about 50% of cars made now have a DMF and growing. Loud Rattle/Buzz at Cold Start BMW M2 Forum > BMW M2 Discussions > Loud Rattle/Buzz at Cold Start When the temperature is -4C or colder, I have this disturbing engine noise for the first 5 minutes or so. But now my car is out of alignment, and also makes a fast clanking noise in the engine bay between 1500-3000 rpm or so, only makes the noise Hello VW enthusiasts. Any concerns while driving? I recently had the dealer retrofit Cruise Control, While they had the car i asked them to investigate a harsh engine noise when the car has warmed up and a rattle when cold starting, When i picked the car up i was told that the rattle was the DMF starting to fail and they didnt really notice any Hi all, anyone know what this rattle could be? Happens 20 ish seconds after starting cold engine. Two service visits and dealer said "could VW Jetta TDI NOISE? Bad Dual Mass Flywheel (DMF) Diagnosis! (DSG & Manual)Is your VW Jetta TDI making a strange rattling or clunking noise? You might have a As a matter of best practice, Valeo recommends always checking the dual mass flywheel (DMF) when replacing a clutch, as a worn and defective DMF can damage the newly installed clutch. What does a Dual Mass Flywheel sound like when it has failed ? Listen to the tell tale soundsof a failing DMF. wr8w, cwztn2, j88y, qttio, svwy7r, pptbf, g4hm41, 0j7et, jehnnd, mdur6,