Golf IV R32 :: Hissing Sound From Rear Of Engine Bay
My car has been making a hissing sound when I turn it off for the past few weeks, I checked the hoses around the intake manifold and they all look to be attached fine.
I took a video and discovered a flex in the rear of my manifold..is this normal? What would be the common issue?
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Golf IV / Jetta IV :: Hissing / Buzzing Noise At Certain Speeds
2002 Jetta 2.0 4-speed auto - 151,xxx miles.
Symptom: when driving, occasionally there is what I can only describe as a fairly loud (but not overwhelming - radio easily drowns it out) hissing+buzzing noise. It's a bit like listening to a small plastic gear grind at a very high speed with a bit of a hissing as a backdrop. It only happens occasionally, and I haven't identified any glaring rhyme or reason to when it happens.
What I can say is I've observed it around shifts on fairly strong acceleration, I've observed it climbing long hills, and I've observed it when cruising ~60mph on the freeway. It SEEMS like it is sensitive to the gas pedal - when I hear it, if I depress the pedal more and accelerate I tend to move beyond it, but if I let the pedal off and decelerate (thinking of the 60 mph freeway case here) I can bring the sound back. And if I continue to decelerate we move past the noise.
So, I can't really tell if it is RPMs, or speed, or engine load, or...
A little about my history with the car: I bought it only 2,000 miles ago, so I can't say much about what is "normal" or has been going on for how long.
A little about the transmission - I know they have a very bad rep. I had the trans fluid changed with the correct type right after purchase. It generally shifts ok. There are occasional delays going from reverse into D, and sometimes shifts on acceleration are less elegant than you'd hope, but it seems to generally function as a 4-speed transmission ought to.
This noise is something failing, and given that seems to relate in some way to speeds/loads/possibly shifts I hope this isn't a sign the transmission is going to suddenly give out.
Golf/GTI VI :: Loud Hissing Noise - Exhaust Leak?
I feel as though my APR turboback has an exhaust leak.
There is a loud hissing noise that overwhelms the exhaust, turbo and engine noise. What it is. Sounds like a loud hissing when then turbo begins to kick it. Not normal, and it slowly has gotten worse and more noticeable.
I have a feeling its the downpipe, but I can't check it myself. When i give it gas and the hood is open (at a standstill obviously), the engine compartment smells like exhaust fumes.
Could be playing mind games with myself. What do you all think? Any way to surely test and see? I am taking it to dealership on Tuesday to double check.
Golf IV R32 :: Loud Hissing Noise Coming From Top Of Motor?
Today i went out side to warm up my car before heading out to work ... When i started my car i got out and i hear a Loud HISSING sound ??? So i popped the hood and it just got louder ?? sounds like its coming from the top of the motor and also on the left side by the belts ??? its a 2004 R32 and i just hit 80K miles?? What it could be ??
View 5 RepliesGrand Prix :: 1997 - Hissing Noise After Turning Engine Off
I've been fixing things here and there (hub bearing, struts, etc.). My latest repair is the water pump, it was howling for a few seconds during cold starts; I just replaced it today, hopefully this unit lasts for a long time.
A few days ago, I noticed this hissing noise after I turn the engine off at normal temp. Since there was a leak from the radiator drain, I thought that was it and didn't care about it. I just installed a new o-ring on the drain cock along with the new water pump. Test drove the car and it turns out the noise is still there, is it normal or not, I didn't put much attention before.
The noise can be heard from underneath and above the engine, it kinda seems to be coming from the intake BUT I find it weird since I installed a new upper intake manifold in november of 2013. It's a Dorman unit and I followed all the instructions from the kit and the workshop manual. Lower intake manifold gaskets were replaced back in november 2009 after the engine was rebuilt because of a cracked head (not sure what type did the mechanic use, back then I didn't know much about repairs). It's hard to believe that these gaskets have failed already. I also replaced the coolant elbow almost two years ago after the belt tensioner assembly failed.
Golf IV / Jetta IV :: Buzzing / Hissing Noise At Certain Speeds / RPMs / Loads
I have a 2002 Jetta GLS 2.0 4-speed automatic, 151,xxx miles... I have only owned it a couple of thousand miles, so I can't offer much on what is "normal"...
The issue I am having is as follows: I sometimes get a strange buzzing/hissing noise that sounds like it is coming from the engine compartment ~45 degrees to my right while driving. It's very hard to describe - the best I can say is it sounds a bit like a little plastic gear is spinning/grinding at high rpms, yielding a buzzing noise, and there is a hissing-like sound as a backdrop.
The sound happens only occasionally (but seems to be happening much more frequently, which is worrisome). I have heard the sound in different driving scenarios, so I can't say "it only happens when...". However, it DOES seem to be sensitive to throttle and driving conditions in some way. I have heard it while a shift is taking place, I have heard it under load on a long incline, and I tend to hear it right around 60mph. Interestingly, in the 60mph example, can make the sound go away by accelerating past 65, or by decelerating down to ~50... it seems like there is some kind of transition taking place at 60 that fosters the sound?
The transmission is generally functional - I had the fluid changed right after buying it (with the correct fluid), and it generally shifts ok. It does have some of the quirky behavior the transmission is known for: occasionally hesitates to go from R to D, sometimes shifts while driving are less subtle than they should be. But I'd say as a whole it operates as a 4-speed transmission would be expected to.
However, since this strange noise is getting worse, and seems to be related to shifts/load/andor speed in some way... I am worried about trans health. What to check? Because it is intermittent, and doesn't exist at idle and rarely appears when going around the block good luck getting a mechanic to observe it...
Golf VI R :: Loud Hissing Noise From Passenger Side / Boost Won't Go Over 24lbs
So for the last 2 days I heard this loud hissing noise from the passenger side of the car and also noticed that my boost won't go over 24lbs. So I called my local tuner shop Innovative motor sport in Stratford and was told to bring it down to check it out. Less then an hr later I was at the shop and we where putting it up on the ramps to get under to take a look. I took out the panel covering under the motor and looked up to find a hole in my turbo outlet coupler. Tom at IMS had an extra laying around and let me use it till I get a replacement.
View 10 RepliesLexus GX 2004-09 :: 2006 GX470 Engine Hissing Noise Never Stops
06 GX470 muffler exhaling white smoke for a while, now the smoke disappeared, however, a new hissing engine noise is evident. The noise increases with the revolutions of the engine and it never stops.
View 13 RepliesPassat (B5) :: Hissing Noise Coming From Area That Reacts With Engine Speed
O2 PASSAT 1.8t had crankcase vent recall performed now there is a hissing noise coming from that area that reacts with engine speed. Also I notice that hose that plugs into the intake manifold, from the new gizmo they installed ,COLLAPSES when the engine starts?
View 1 RepliesIS F (2008-2014) :: High-pitched Hissing / Whistling Noise Coming From Engine At 1500 RPM
Usually after I run the car in manual/sport mode, I begin to hear a high-pitched 'hissing/whistling' noise coming from the engine. It sounds like a vacuum leak. It is audible while driving with the windows down.
I am having problems pin pointing the source, but it sounds like its coming from the center block. What is the right direction to the leak? It starts exactly at 1500 and cuts off at 2200 rpm (while in gear). 1500 to 3000 rpm while in park..
I have a Takeda intake installed and I re-tighten the fittings.
Accent LC (2000-05) :: 2004 - Constant Hissing Noise Coming From The Middle Of Engine Compartment
My 04 hyundai accent about 2-3 months ago acquired a hissing noise which seems to be coming from the middle of the engine compartment. The car only has 100,000 miles on it.
It is a constant hiss that only stops when the gas pedal is pushed initially. I have looked all over the car and can not see any fluids leaking at all. It is pretty loud and can be heard easily outside the car when the car is on.
I hooked up my obd2 reader and found these codes:
P0304-Cylinder 4 misfire (I notice it when the car sits at idle for about a minute)
2x P0121- Throttle Position circuit range/performance problem
2x- Evaporative emission incorrect purge flow.
Ford Super Duty (1999-2016) :: 2011 - Hissing Noise Coming From Engine Compartment Under Acceleration
Looking for some input on a recent "hissing" noise coming from eng compartment. It's only noticeable during initial acceleration, and sometimes at the beginning of gear changes. I am assuming its tubo and/or exhaust related, as I've noticed a strong exhaust odor in the cab as well. I wasn't under load when the problem started but i was under rapid acceleration. Not noticing any fluids or oils leaking. No warning lights have tripped, as of yet.
View 1 RepliesVolvo :: 85 740 GLE Hissing Noise Coming From Near Oil Pan
My 85' 740 GLE has been having some troubles lately, A nasty loud hissing noise is coming from near where the oil pan is and it is more prominent when i apply pressure to the gas pedal or sometimes when my foot isn't on the brake or gas. The first 5 minutes or so of the drive are fine, you hear the hiss but there are no noticeable performance issues. After a few minutes the noise gets a little louder and starts to effect the acceleration tremendously to the point where it'll take me roughly 10 seconds to hit 30 mph from being stopped.
View 2 RepliesCamry :: 2007 LE - Rattling And On / Off Hissing Noise
I recently obtained a used '07 Camry LE (2.4L with 120k miles) and thought to clean the throttle body when I changed the spark plugs. After putting the intake compartment and connecting everything back together (I'm assuming correctly), the air filter box along with the hoses seem to rattle a bit more. Today, I popped the hood after a short drive and discovered a on/off hissing sound -- it's possibly this sound started the day I worked on my car.
Thought I would post a video clip : [URL] ....
Volvo :: Hissing Noise From Under The Hood When Go Faster
96 850 turbo auto. 150k .. My girlfriend just informed me there's something wrong with the car. I drove it, from idle to 1/2 throttle it drives fine cruises on up too a hunski pretty quick, but from half to full there's a hissing sound coming from somehere under the hood and while its hissing it feels like the turbo doesn't want you to go any faster. Also from a stop light if you give it full throttle it wont shift out of first unless you let off the gas.
Also when in park if you rev the engine to like 4-5k and let off, very very slowly does it drop back down to idle. The tracs off and abs lights are on! I'll hook my code reader up tonight to see if i can pull any codes.
GTI 337/20th Anniversary :: Hissing Noise When Let Off Throttle
So, when i throttle down i get a hissing noise, almost like a very small jet engine. then when i let off the throttle I get the psh psh psh psh noise and not the solid pssshhh noise. What might it be? I was thinking pcv breather, or DV, but i dont want to go just replacing parts. I have the 04 gli 1.8t ....
View 2 RepliesElantra XD (2001-06) :: Hissing Noise And No Functioning AC
My wife just recently rear-ended a truck with a nice big hitch in her 2006 elantra. The aftermath was a hissing noise and no functioning a/c. I took apart a very bent front bumper, and discovered that the condenser was punctured and had spewed oil all over the place. I have a question regarding how I will recharge the system after I install a new condenser.
1. Can I just simply add new refrigerant after I install the condenser?
2. Do I need to be concerned about replacing the refrigerant oil? If so, how do I do this? Do I need to drain the existing oil? If so, how?
I have never recharged an a/c system after "cracking" open the sealed system, and I didn't even realize that an a/c system had oil in it until i saw it spewing out of the condenser.
Accent LC (2000-05) :: Hissing Noise When Car A/C Is Turned On
I hear hissing noise when my car A/C is turned on. I have show it in Firestone and the person is like everything seems fine. I do not understand the reason. But the A/C works without any issues.
The hissing noise can be heard everyday when i turn on my A/C initially and later in between i can hear 2 -3 times a day when i go to my office.
Tiguan :: Hissing Noise When Accelerating Hard
Noticed a brief hissing sound when accelerating firmly? Doesn't seem to be coming from the engine compartment, maybe from under the dash, it is very brief, a couple of seconds tops and sounds a bit like pressurizing a container just before the valve closes. Not an issue, not even a nuisance, but I am curious about it.
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