Terrible Sound at 100 MPH
07-12-2012, 06:01 PM
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Over a month ago I noticed a terrible sound from my car when it goes more than 90 MPH or so. I made a video of it and showed it to my SA and a tech., but they were not confident on what the source is. A suggestion was the turbos were failing, but the sound is not dependent on engine RPM only vehicle speed; I go WOT through 1-2 shifts often enough (and couple of 2-3) and have not experienced this sound at lower speeds. The sound appears more often when it's hot outside (>27 C), which is probably why I haven't experienced this sound until recently (bought the car in March). I have attached a video clip for your viewing and listening (dis)pleasure. If somebody could help identify the source of this abhorrent sound and let me know, I would appreciate it.
07-12-2012, 10:55 PM
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07-13-2012, 07:06 AM
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Over a month ago I noticed a terrible sound from my car when it goes more than 90 MPH or so. I made a video of it and showed it to my SA and a tech., but they were not confident on what the source is. A suggestion was the turbos were failing, but the sound is not dependent on engine RPM only vehicle speed; I go WOT through 1-2 shifts often enough (and couple of 2-3) and have not experienced this sound at lower speeds. The sound appears more often when it's hot outside (>27 C), which is probably why I haven't experienced this sound until recently (bought the car in March). I have attached a video clip for your viewing and listening (dis)pleasure. If somebody could help identify the source of this abhorrent sound and let me know, I would appreciate it.
You can take some blue painter tape and run around your windshield seal and go for a drive. Repeat this process on the sunroof and rear window seals and maybe you can identify the problem.
07-13-2012, 07:55 AM
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I have a strong bet it's one of your front brake ducts.
I had a high-pitched whine that only occurred around 100 and went away above 110. Couldn't figure out what it was but I knew it was coming from the front. Fast forward to my oil change, and while I was wrenching underneath, I decided to remove the front lower splash guard tray. One of the brake ducts came loose from the front bumper and it was "whistling" with the high speed airflow. I reattached the brake duct to the front bumper and wheel well fenderliner and the noise went away.
I had a high-pitched whine that only occurred around 100 and went away above 110. Couldn't figure out what it was but I knew it was coming from the front. Fast forward to my oil change, and while I was wrenching underneath, I decided to remove the front lower splash guard tray. One of the brake ducts came loose from the front bumper and it was "whistling" with the high speed airflow. I reattached the brake duct to the front bumper and wheel well fenderliner and the noise went away.
07-13-2012, 09:46 AM
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Thanks for the responses so far, everyone! I am at work, so uploading to youtube will have to wait for many hours. I was actually thinking that the sound might be related to aerodynamics myself.
Fortunately the sound is at that speed, because I don't make a habit of driving that fast, and I have first-hand experience of getting caught there, and I don't want a repeat. Still, after hearing this sound I will need to replicate the situation to see if painter's tape or a fixed break duct rectifies the problem.
Time to go to Mexico...
Fortunately the sound is at that speed, because I don't make a habit of driving that fast, and I have first-hand experience of getting caught there, and I don't want a repeat. Still, after hearing this sound I will need to replicate the situation to see if painter's tape or a fixed break duct rectifies the problem.
Time to go to Mexico...
07-13-2012, 05:40 PM
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07-14-2012, 02:06 AM
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I have that same noise. Mine comes in after 120 though