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Audi A4 The Audi A4 model offers nimble handling and performance that makes it one of the leading cars in its class. Read more about the Audi A4 in the Audi A4 review.

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  #1  
Old 09-27-2007, 04:58 PM
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Default Whistling Noise While Accelerating

When I took off for work this morning I noticed that a whistling noise when I accelerate comes into play. I was driving my car fine last night with no noises or anything... I popped my hood and had someone press on the gas while it was in park but you cannot hear anything from the engine bay and everything seems to be fine... you can only hear the "whistle" noise if you are sitting in the car and it sounds like it's coming from under the dash area on the passanger side of the car... anyone have this problem before any suggestions on what I should do? No check engine lights or anything, it's a 97 A4 1.8T Quattro... Thanks guys!
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Old 09-27-2007, 05:01 PM
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Default RE: Whistling Noise While Accelerating

turbo?
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  #3  
Old 09-27-2007, 05:03 PM
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Default RE: Whistling Noise While Accelerating

Thats the turbo sound. When you accelerate, it sucks a lot of air into your piston cylinders to give you max power. Dont worry about it. I kiinda like that sound. Feels like a jet.
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  #4  
Old 09-27-2007, 06:59 PM
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Default RE: Whistling Noise While Accelerating

lol you have a turbo.....
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Old 09-27-2007, 07:50 PM
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Default RE: Whistling Noise While Accelerating

just wondering, do you hear that sound just about 2800 rpm? if so then its more likely your turbo
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Old 09-27-2007, 08:46 PM
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Default RE: Whistling Noise While Accelerating

It's probably your flux capacitor leaking ions. You should get that fixed pretty soon, or else there will be distortion in your spool.
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Old 09-27-2007, 11:43 PM
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Default RE: Whistling Noise While Accelerating

That sound is babys dieing! AHHhhhhhh you killer you killler!!! its your turbo

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Old 09-28-2007, 04:23 PM
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Default RE: Whistling Noise While Accelerating

ill just laugh
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Old 09-28-2007, 04:54 PM
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Default RE: Whistling Noise While Accelerating

If anything, that sound needs to be louder. IMO
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Old 09-29-2007, 02:11 PM
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Default RE: Whistling Noise While Accelerating

Quote:
ORIGINAL: cyberlogicx

It's probably your flux capacitor leaking ions. You should get that fixed pretty soon, or else there will be distortion in your spool.
QFT
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Old 09-29-2007, 03:51 PM
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Default RE: Whistling Noise While Accelerating

TURBO!!! Its normal lol, but yes this does need to be louder... first turbo car I assume?
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Old 09-29-2007, 08:02 PM
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Default RE: Whistling Noise While Accelerating

I have a whistle, but it's a deeper almost jug like whistle, I dot it when I removed my intake box and did my homebrew intake...basically, it only whistles when the wind hits it just right, I am pretty sure that you wouldn't hear this noise unless you do not have your intake box in and your snorkel is still in place...

here's what I am talking about;

Click the image to open in full size.
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Old 09-30-2007, 05:40 PM
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Default RE: Whistling Noise While Accelerating

quattroa4 if that is your engine congrads on having the cleanest engine ive seen so far in one of these cars. very nice.
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Old 01-08-2011, 03:10 AM
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have had some similar problems. I hear this whistling or loud NAAAAAAAAAA sound at higher RPMs, usually 2.5K and above. At first I thought this was the turbo too since the problem was in synergy with when the turbo when turbo is on for accelerating and downshift accelerating. Now I have a different opinion. My check engine light came on the other day and read back code P1176, I was told this means either Rear O2 Sensor failure or Catalytic Converter failure. Given the fact my A4 is 10 years old and has 110K miles on it I wouldn't be surprised. But my thoughts are that its possible the catalytic converter is the problem becuase sometimes the turbo goes on without the noise at all, but when the noise does happen, the turbo kicks on and I hear nothing for the first 5 seconds, then I start hearing the noise. Makes me think its something on the back end and exhaust system since there is a delay on the noise. I have no idea if it could be this vacuum seal valve clogged stuff, its possible, but I dont know. Im just more sure its not the turbo itself.
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Old 01-08-2011, 03:10 AM
 
 
 
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2007, accelerate, accelerating, accelrating, accord, audi, engine, hear, honda, matrix, morning, noise, sound, toyota, whistle, whistling


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