Golf IV / Jetta IV :: Rattling Sound Under Car When Release Off Gas
May 21, 2015
Just today i was driving along in my 2.0L golf when I started hearing a rattling coming from under the front end, its a hollow sound that only really is loud when i step off the gas after accelerating, and a faint little rattle when I am idled. I wasn't too bad at first but now its to the pint where i get no exhaust sound coming out of my muffler, currently I have a 2.25" Magnaflow cat-back exhaust system, so I am pretty certain it has to do with probably the resonator or the catalytic converter. Where I can start?
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So im trying to diagnose my girlfriends issue with her car. When she starts it, the car will make a very loud rattling sound, not really grinding, but like metal on metal contact. Sometimes the sound goes away, but when the car is cold it is a guarantee. The battery light is also on, which was not the case when the rattle first started. I first thought (and hoped) it was perhaps the serpentine belt tensioner as I researched that when it fails it can make a loud rattle sound.
Once replaced, the same issues occurred. So I went ahead and put the old one back on since it was not the issue. Note that the old one and new one both shared the same tension applied to the belt and the pulley was still smooth without issues.
Using a stethoscope to try to determine the location of the rattle a bit more precisely I found the noise to be coming more from the alternator. Weird because I recently replaced it within the last year. I went ahead and removed the tension from the belt and played with the alternator for a bit. The clutch felt good when i used a screw driver to hold the fan and tried to move the pulley. One direction moved with ease while the other direction refused to budge, perfectly normal as I researched. The thing that I noticed that I thought was unusual was the fact that the shaft of the alternator had some play (Video below).
The belt has plenty of tension on it so i do not believe that it is slipping on the alternator. I push the belt with the tensioner engaged and the tensioner does not budge.
I decided to measure the voltage coming off the alternator with the car running and it was at 10.95 which im pretty sure is very low for these cars.
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I drive a 24v vr6 GTI in 6-speed I was coming home and as I turned and got on the gas a little and all of a sudden there was a pop and my car couldn't go in gear when I release the clutch. Luckily I was close to home and basically cruised in neutral. I jacked it up and found that my axle is twisted. Now I was aware the boots were torn before so I'm assuming the axle got screwed up but my other concern is, why won't my car go in gear? Here's the photo of inner CV. I'm hoping it's just an axle and not the clutch.
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Recently I noticed that my car (Golf IV TDI 90) starts to release a bad smell from air vents driver side, but it's not all the time knowing that the air conditioning and the ventilation are disabled. odor similar to the first odor released during the activation of the ventilation to disengage the first odor.
for your information, i have already changed the pollen filter withe a new one.
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It's a 2003, 2.0, rear disks. If I take it apart and manually compress the piston with that rotating clamp that Autozone lent me I can put it back together and use it 2 or 3 times and then it's too tight and I have to take it all apart again. I don't have the cable hooked up, I just move the lever with my hand or a screwdriver.
I'm a little irritated cause I replaced this caliper last year. I remember finding a good description of how this device worked and now I can't find it again.
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When I drive the car makes noise just started. What I would like to know does the mk4 12v vr6. I have a differential and when i press the gas or release the gas the car jerks.....
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So the window switches and hatch release switch have decided they want to stop working. Along with actually locking my car from the inside or keyfob. I have checked all the fuses and the wiring looks to be intact. The hatch release switch doesn't work but the fuel door switch Does work. The passenger side window switch also isn't working and of course both Windows are down.
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MkIV 2.0 ... My 4th cylinder will occasionally misfire if I release the clutch at too high of a rev. It is intermittent but happens if I do a burn out or something. How to fix this other then stop doing burn outs and such.
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I own a 2000 Jetta GLS TDI 5 speed with 501,000 kms on it. The problem I have is the passenger seat back release handle broke off so there is no way to fold down the seat.
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Went to the dealer today to check on this rattling sound that happens when i go about 70mph. He said it was the belly shield? is this the same as the skid plate? i think i ran over something and it broke the screws and some other things on it.
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I own a MK4 Golf GTI which has recently started making a rattling noise when I first start the car (Perhaps cold weather?). It will continue for roughly a minute despite load (A/C, acceleration) before It stops and It won't happen again until the car has cooled down hours later. It's quite an unsettling noise and I would like to be set in the right direction.
After a couple hours online I'm leaning towards perhaps the belt tensioner being to blame? I haven't delved too deep into the noise but do believe it is from the left side of the motor. Can likely clarify on the weekend.
Is there anything to worry about? If so, where do I start? I myself was trying to fiddle around and see if the noise would happen at higher revs, which it seems to. [URL] .....
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I would really want to know what is causing this sound as it has become louder.
The noise can be heard in this short video: [URL] .....
The noise is coming from the area of the pulleys, and can be perfectly heard behind the passenger side front wheel.
The car is an AWD 1.8T Golf 2002 model.
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Having this problem where the button to release the hand brake rattles constantly while driving? The only thing I can think is to replace the spring in it, but Idon't know how difficult that would be. Otherwise my only other thoughts are to find something thing enough that I can slide into it and hope it doesn't ever jam it up.
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Get a rattling sound when in park and when it warms up after a little drive it goes away, When a gear is engaged the noise goes away.
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I was playing with the paddle shifters while driving home and went into too high of a gear for my speed (I think 4th gear at only 20mph, 1000rpm). When I gave it some gas, I noticed a clattering/rattling sound coming from under the hood, along with the usual low growl/bogging you'd expect for being in too high of a gear. I quickly downshifted and the rattle went away and the car accelerated as normal.
Is this reason for concern? I only noticed this because I had my windows rolled down but worry I might accidentally damage something if I don't hear it or not pay attention.
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I have this rattling noise. i have gotten under the car, and resecured the heat shield its starting to rust around the mounting points but that's not the issue, on the driver side near one of the large rubber plugs i hit around it with a hammer and there is something inside of it that is rattling starts around 1900rpm and stops around 2500 rpm how do I get in there to get the damn thing out? Its not the cat nor the exhaust etc.
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Ok so lately I noticed a horrific rattling coming from the rear of my car. It happens mostly when I'm in a high gear going slow with a load on the gear. It's sort of like the rattle that comes from the exhaust with the same gear load but it's much looser and rattley sounding, and it doesn't always do it. It almost sounds like a piece of sheet metal in my spare tire well rattling when there's a gear load and the exhaust rattles. But I checked in there and it seems tight.
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I have a 2003 1.8t jetta. I got it in the fall and never really needed to turn on my AC until this week. It works, fans work at all speeds, blows ice cold air.
But i noticed today that my fans can be on and nothing. But when I hit the AC button there's a loud rattling sound. Everything works. It's just making noise when the AC is on. Whenever I turn it off the noise goes away.
I tried looking it up and couldn't find anything.
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When i first got my MKV R32 it was such a great handling car. I was able to got very fast on curvy roads with not even a slight bit of skid or squeal. Now its developed this rattling and squeaking sound. I feel the bumps in the road more, i notice more body roll, and alot of vibration in the steering wheel, and what pisses me off the most is i hear more squealing on turns that i used to be able to take faster with no squeal. For example i used to b able to take this turn at around 75mph no peel, now i started peeling out at like 63. (my tires have alot of tread) when i got the car it had around 17,000 mi on it now it has 31,000 mi.
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I have a major rattling sound from under my car... it sounds exactly like a heat shield. I have been up under my car 5 times and I can not find a loose shield anywhere. the cat insulator mesh is still in perfect condition and it now seems the sounds is coming from somewhere in the back of the car, perhaps the muffler area.
This car does have the flapper mod done... could there be something inside the muffler itself? the car only has 40k on the ODO and I have not hit anything or do not have a dented muffler. As a fellow VW'er I do not want to be the only one running around town rattling...
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At idle, what sounds like my transmission is making a scratchy/rattling sound that I haven't noticed before. What it is? (Be careful it's loud.)
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