02-16-2018, 10:40 AM | #1 |
Lieutenant Colonel
3755
Rep 1,936
Posts |
Need help with weird howling noise. (Video included)
Car has been running flawlessly for about a year so I knew something was coming.
Anyhow, it's making a weird howling-type of noise when idling. Gets louder with slight RPM increase (i.e., turning on AC). Goes away with stabing the throttle. I only notice it when car is warmed up, never after cold start. I tried to locate the source with a stethoscope without any luck (only around engine bay, have not lifted the car to listen underneath). Suspected bad serpentine belt but I don't think that's it. Transmission going out (shifts smooth and crisp)? Engine oil pump? Transmission oil pump? Torque converter slipping? I figured I'd start here before I go to a dealer or indy. Here's a video of the sound, hope you guys can make out what I'm hearing. Any help would be appreciated. Thanks. UPDATE: Indy is 95% certain that it's the Bank-2 (driver's side) turbo. They were able to trace the noise up the exhaust and to the turbo. They don't believe it's the bearing but rather that the wastegate is not fully opening and/or closing, thus creating that noise. I'm not convinced. Last edited by mirob; 03-09-2018 at 07:49 AM.. |
02-19-2018, 07:22 AM | #4 | |
Lieutenant Colonel
3755
Rep 1,936
Posts |
Quote:
Appreciate the free bump. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|