I have this odd turbo squeal in 1st and 2nd gear WOT at low rpm... turbo is new and was replaced in june of this year... had no issues with it up till probably a few weeks ago when the squealing started... it doesn't happen in any other gear at WOT, just 1st and 2nd... where do I start looking?
Here's a video of the squeal : [URL] .....
I bought a 2004 2.0 Golf a few months ago and I've been noticing a strange squealing sound.
1. It happens when sitting in neutral or with clutch in for a while (red lights, etc) and when letting the clutch out and giving it some gas in first gear or reverse
2. Lasts only about a second, between 1000-1400 rpm maybe?
3. Never happens between any other shifts, and doesn't seem to happen if I really hit the gas/let clutch out very fast or shift quickly
4. Electrical load, engine hot or cold, A/C on or off, turning wheel all seem to be independent of the noise. Sometimes it happens, sometimes it doesn't regardless of these.
5. I've put a few thousand miles on it since I bought it, doesn't seem to be getting any better or worse.
6. Sounds kind of like a pulley/belt squeal, but I'm afraid it could be a throw out bearing or pilot bearing?
I found a lot of references to the clutch pulley on the alternator seizing on mkivs so on a whim I bought a new belt and clutch pulley, but when I went to change them I noticed that my alternator doesn't have a clutch pulley on it. It's the OEM 90A Bosch alternator.
The car has about 135k miles on it but unfortunately I just bought it so I don't have much of a history.
1. Any thoughts on the noise?
2. Should my alternator even have a clutch pulley?
3. I put on a new Goodyear serpentine belt because I thought maybe the old belt was slipping or something (it was in rough shape) but the noise doesn't seem to have changed.
Just as a troubleshooting method, I'm thinking of taking the serpentine belt off completely and trying to replicate the noise in a parking lot, just for a few minutes when the engine is cold.
I have an 03 vr and my serpentine belt squeals when I first start the car up and after it warms up it will go away at idle but starts to squeal again when i accelerate. I can not seem to find what is causing this. After I start it and sprites a little water on it near the power steering pulley the squeal will disappear then come right back. I've tried new belt new tensioner and new power steering pulley. What else I could try or look for...
View 1 RepliesCar was running fine, on the way home from work I noticed it having a loud squeal while accelerating, down shifting.
The car squealed all the way home fine, no power loss really no smoke no anything, I let the car sit for a little, warmed it up and decided to go to drive it around so I could diagnose the problem better.. While doing so now let me describe the sound.. it's like the sound when you go in reverse and back up, that winding sound.. that's what it sounded like.
Back to the story while driving to diagnose the problem more within 5 minutes it made a loud sound like an axle falling out almost on the passenger side of the engine, once I got out I could hear it more and more and looked under the car it looked wet and it looked like oil running down but also could of been something else I'm not sure.. I took a video [URL] .....
The car made it home safe and sound and parked but I don't know if my engine is done. To note I only saw one drip of oil come down while I was underneath of the car but shown in the video you can see where it looks wet was not there before I drove it.
Have a very high pitched squeal on cold starts as well as when idle occasionally.
Bad compressor?
I noticed that the turbo sounds kind of weird when it first spins up in 2nd and 3rd gear. Kind of a rattly whoosh noise before the normal whistle. Is it normal? I thought it was the "noise maker" thing, but FWIW the 2011's don't have it.
View 4 RepliesWell I have been working on my build for about 2 1/2 years. Built the motor for the turbo set up that I had on the car and a few other goodies.
Now the motor turns over with no issue and I have spark. So I know my problem lies in the fuel delivery. My pump tested fine and I have fuel at the rail. So my next guess is the injectors. After trying to start the car I pulled 2 spark plugs out and they where dry. So this proved to me there's an issue here.
Before I go and rip my manifold off and start pulling injectors is there anything I could check first? I'm thinking from sitting that have gotten dirty and clogged.
Looking for wire diagram for the injectors on the vr6?
I have a GTI with a turbo that leaks oil.I don't exactly know what to do. The guy i bought it from said it had "Bad Seals" I've seen many rebuild kits online for my turbo(KO3) Looking through the kits i really only sea one seal. One single O-ring. So that doesn't seem right but this is my first turboed vehicle so i can honestly say I don't know much. Should I buy the Rebuild kit or should I just buy a new Turbo? Any video to reference too because i don't even know how to remove my turbo.
Also, on a side note. I was being a show off one day and tried speeding off like a dick.I went from first and grinded HARD into second and since then I haven't had first gear. Now i suspect its my synchros. But like i've said before. I don't know much.
So, I have a 2005 gti 1.8t, has 110k on it, just did a 3" straight pipe, and while a buddy and I were installing my new pipe, and straight pipe, he said my turbo seals were going bad. I could get the k04 cause it handles better, or get a rebuild kit. Well, today when I give it throttle, it almost makes a knocking sound from the turbo? Not from the front of the car, but at the end of straight pipe, you can hear it in that constant spool. What could this be? Time for the k04. Car has unitronic stage 2, so it gets ran hard sometimes.
View 21 RepliesMy car was having a strange power issue after I went stage 1+. This occurred 3 separate times and always at the same moment in acceleration. I would be on the highway on ramp shifting from 5th to 6th and the car would just die, the turbo completely quit functioning. When this occurred the car had no power and would consume fuel like crazy. Each time this happened it was over 90 degrees outside. If I parked the car and let it sit for 10 minutes before re-starting it would be back to normal. Since going 2+ this has not occurred. I don't know if this was a protection mode implemented by the ecu or what.
View 8 RepliesMy wife just got his car and she loves it!. its a 1.8t 5 speed. Runs and drives awesome. She had 2 new beetles before this one with the same motor but they both had 2 1/2 exhaust from the turbo back. The jetta will be done soon but it has this slight growl when its idling sometimes. Doesn't seem like its every time or may be it seems more when its warmed up. We had just changed the timing belt and tensioner and water pump but we did it 2 days after we got it so I am not sure if it did it before or not.
Kinda sounds like a bad needle bearing where when you spin it and can feel little bumps in it...don't know if that makes sense or not. You can kind of feel it when your sitting in it but its hard to say because we just got it. I don't remember the beetles doing it though but may be the exhaust kinda made it less noticeable. It did have a code about exhaust something bank 1?? I am thinking the cat might be bad or the o2 sensors. i have more sensors im gonna try but when i do the exhaust I know the light will be on anyway.
While I'm in the engine troubleshooting the AC system, I figured I may as well get into a few other issues I've noticed.
I have a stock 1.8T and my turbo feels like it's surging occasionally. A few months ago my diverter valve started making the "blow off sound" when I shifted (manual transmission).
Is it possible for a faulty diverter valve to dump the boost overboard and cause the turbo, and engine hp, to surge? It almost feels like I let my foot off the gas for a second or two (i.e., engine power is very peaky).
A second thing that comes to mind is a clogged fuel filter. I know VW does not recommend ever changing it so it's never been done. Is this a possibility as well?
Air filter is clean, by the way. There's a K&N washable one in the stock air box and I can see daylight through it so it's not too dirty.
So I recently got this GTi and I was wondering what steps I should take before putting a bigger turbo on this car and the steps I should take when putting a bigger turbo. What should I do first be for considering a new turbo?
View 1 RepliesI have a 2000 golf 1.8t 4 door Looking to make my car a little bit louder than the stock system. I am looking at getting a new downpipes from neuspeed. I don't know if I should go ahead to and get a new ecu, I don't have a ton of plans for the car just want to make it a fun daily.
View 4 RepliesI have an 03 GTI 1.8t with the stock K03s turbo and i used to boost to 25 pounds. Had to put a new motor in and now i when i boost above 20 pounds i get turbo flutter and loose boost. I can boost anywhere up to 20 pounds and the turbo doesn't flutter at all.
I had a spring on my waste gate which i have taken off and it changed nothing. I tried a different diverter valve and it didn't change anything. I unplugged the MAF to see if the N75 or the there was a boost leak and extra air wasn't being monitored but still changed nothing. It has nothing to do with my RPM range just when i boost over 20 pounds. I am planning on doing a leak down test to make sure there isnt a boost leak....
Have had this grinding noise going on with my 2001 gti GLS 1.8t, the cam chain tensioner has been replaced recently. Would really like to get this solved and fixed, car has 81k miles.
Found this video on youtube, same model and exact same noise as mine : [URL] ,,,,
There's this 1.8t gti I'm buying this week from a family member and we've been trying to solve an issue that we ran into. When accelerating the car there is a hissing noise, safe to say that it is air. Then when accelerating a little harder and you feel the turbo pulling you everything seems fine. But a second or so after , the turbo dies off and so does the hissing noise. Then I can let go of the gas and repeat the process and it happens again.
My issue is that I cant figure it out since I Need to be driving to hear the hissing and the turbo cut off. I looked around the threads but nothing really seems to match my issue. No codes either. On top of that I've never owned a 1.8t and don't know much about its turbo.
I bought a 2002 gti mk4 with about 127000 miles on it .I did not know the turbo fans were blown out , they were sitting in my down pipe next to my catalytic converter . So I replaced the turbo myself , and 2 hours later the fans fell out of the new turbo , what might be the problem ? why it keeps blowing.
View 7 RepliesYesterday i was cleaning my car and when I took it out from the garage i noticed a spot on the garage floor. Put my finger on it and thought it was oil but when i looked under the car it was red. It was a few drips on the oil pan and a few on the splash shield. I'm sure its coolant because i was missing some too. This morning on my way to school by serpentine belt started the squeal every time I let go of the clutch. Where this leak is from? My guess is that its leaking onto the belt making it squeal and slip. Its a 03 vr6 24v ...
View 1 RepliesMy turbo started to have oil on the top of it. I don't know where it's coming from at all, it started to blow blue smoke but not all the time. You can also smell the oil burning off.. someone said maybe the pcv system but not sure. Still new to the vw world only owned the car for about 4 months. Trying to add pics but it's not working.. Will keep trying
View 3 RepliesMy stereo fuse had blown off and while trying to find it, i removed all the fuses one by one to see which one was blown. I found the fuse, changed it, stereo was back to life. Only problem is that right before removing the fuses the car was driving normal. After checking the fuses the car seems to take longer to start; starter keeps turning for twice the time it did before. Also it seems as if the turbo is not even there. Btw the car is a golf mk4 tdi 150 bhp 2001 model
View 4 Replies