Golf IV / Jetta IV :: 2004 1.8 Turbo Growl At Idle
Dec 14, 2014
My 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.
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Not sure where to even start this but ill try to keep in concise. 03 gli 24v 6 speed. 125500 miles. At about 123500, i start noticing this slightly growly bearing sound at idle, without the clutch pedal pressed. When you press the clutch pedal, it goes away. Waited a bit, and at 125k, i replaced the clutch, flywheel, and throwout bearing, thinking it was a bad throwout bearing. It wasnt that.
Next, after more research, it seemed the 02m 6 speeds have had some issue with input shaft bearings wearing out making similar noises. So, pull the trans back out, and send it to APTuning in PA. Have new input shaft bearings, upper and lower pinion shaft bearings, and diff bearings put in. Even though they said they saw no major wear to be worried about in any of them. And here we are, left with the same noise.
One of the guys at APTuning said they had a case with one car where the thrust bearings wore so bad it made for a similar condition. Where the car would make unpleasant noise without the pedal pressed, and would go away when a load was put on it with the pedal. SO, i guess what im asking is, is there validity to that? What are the chances my otherwise seemingly fine 24v has this issue and end play is so bad that is causing this noise?
The noise gets NOTICEABLY louder when the car is hot. Its almost silent on cold starts. But after 15 miles or so it can be heard almost voice level with the windows down when you're stopped and idling; it really hurts to drive it being a caring owner hearing it. The motor is still in the car with all accessories so i can't check the end play scientifically. But to be fair, if this is plausible, and is the issue, i dont think it'd take precision to tell.
I'm so deep into this, and thought I've ruled out everything yet the noise persists. Really at a loss..
Listen around :30 where I start to cycle the clutch pedal. When I press it, you hear the main shaft "spin down" and the noise go away. When I release the pedal again, you here the clunk and the noise again. Its also been sitting for 3 hours. Good bit louder when hot [URL] .....
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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.
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I've been struggling with this issue for several months now and cant find the issue. My R32 is fully build 6767 turbo and all supporting mods, it has UM 870cc tune and a PRO Maf. Suddenly it started being too rich at idle, wont even start some times and when you press the gas it dies. When MAF is disconnected it will start but when pressing the gas it will die also. Fuel system is a twin 044 Bosch and OEM fuel pump with a FPR. Been trying with different fuel pressure but it doesn't change anything. What could it be the problem?
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U have a 2004 gli 1.8t. At idle the wideband is reading 16 .5 to 18 at idle. While driving it's normal at 14.4. No check engine light or lean codes tho. is this normal?
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I have a 04 jetta 1.8t that just randomly started having some overheating issues. I just got the car two days ago, and the first day I had it I replaces the coolant temp sensor due to a check engine light. Drove 50 miles and the light shut off. Just yesterday I was sitting in traffic and noticed the temp going above 190 (which it hadn't done in the 200 miles id driven it so far). I brought it home and once I was out of traffic and moving along the temp went right back down to 190. The only time it tries to overheat is when its sitting still or at idle (after reaching operating temp). which is weird.
I was parked in my driveway and let it sit at idle for a few minutes until the temp started significantly rising. i revved it to 2000 rpm (thinking it would rise even more), but to my surprise it instantly went down to 190 again. my big fan isnt running either, but my friend said he doesn't run fans in his and that it shouldn't overheat because of the fan. also, my top hose is warm to the touch, but the bottom isn't. I know your thinking thermostat, but if that was the problem it would :
1: always overheat, or
2: never overheat.
The temp wouldn't fluctuate the way it is.
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Well 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?
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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.
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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] .....
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Car started to do some weird stuff today. Misfiring under high load, as I get into boost.
Idle is around 1000-1100 RPMs. Cold start is fine, idle is normal in terms of going higher a bit, but then it sits at 1kish. This started last night after the car sat for a couple hours. Totally normal running and driving prior to this.
I've seen all the MKV threads about it that suggest everything from battery, to alternator, to grounds, to vacuum leaks, to intake leaks, to MAF.
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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.
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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?
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I 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.
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I 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....
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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] ,,,,
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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.
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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.
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I have a 2004 gls 1.8t Jetta. It has a straight piped turbo back exhaust, and a stage 2 tune. I recently had a problem with my car starting to rough idle when the engine gets to proper temp. The car starts to idle roughly, and when driving the car will bog down, if I keep my foot on the gas, the car acts like it is coasting and the rpms fall, but at some point the car will shoot off like i floored it. At lower rpms in the 1st and second gear, the car will randomly and periodically start bucking, with the same symptoms. I already replaced my coil packs and spark plugs with a kit off ecs, and when i went to change the spark plugs i had oil on the spark plugs and oil leaking from a bad valve cover gasket, so that was replaced as well. I replaced the fuel filter already.
The MAF sensor was just cleaned and didn't look too dirty. When I unplug the MAF it still idles rough. The fuel pump relay can be heard working properly when the door opens. Another problem that sometimes occurs on cold start is if I don't wait long enough for the pump to activate or sometime right after it starts, the car will start partly then stall out. When driving and the car is bucking the exhaust gives rich fuel smell. Also when 2 stepping in the car (which I don't do very often), the CEL starts to blink and the car misfires and drives rough. I figure since I don't have many parts on it yet I probably shouldn't do it anyway so I don't blow up the engine.
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My 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
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My 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
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I noticed last night that my cars turbo had a much louder whining noise when I accelerate. There is no blow off, doesn't sound like much air coming in and also there is not very much boost being put out at all. I've come to think that it may be a loose seal or gasket along the way but I'm sure hoping it isn't a pooched turbo... I don't have a boost gauge so checking boost pressure isn't an option right now. Just noticed from putting foot down but no boost.
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