[Freemorfeem]

Ok, this one has me totally stumped. Listen to the sound at the link below.

I placed my phone on the passenger side floor for this video. I'm on the highway. I hate this noise! I'm stumped!

I've checked the cooling fan for obstructions. While off, I spin it manually and it's free and clear and quiet.

The noise occurs around over 50mph. It's unrelated to acceleration input. Seems to start up when under a load on shifting over 5k rpms.

Seems unrelated to the work I just did on it, but logic would say there's a high chance of correlation:

Just finished new water pump, tstat, radiator hose, belt, tensioner, upper & lower pulleys, and NEW VRSF FMIC.

Thanks a lot people

[F31B48]

Sounds like a loose engine undertray flapping on the body

[e91Owner]

Definitely sounds like something is not secured. Whether that's a tool left somewhere, a panel, pan, swaybar, etc, not attached is anyone's guess.

[Freemorfeem]

Thanks! I'm glad it's not a "familiar failure" sound.

I'm just going to get up underneath, remove the tray and look around for something odd.

About 5min before reading these responses, it hit me that it's probably the wind starting the sound, so my mind went to the belly tray like you mentioned... maybe it's flapping and making a wire or some other plastic piece hit a drive axle or drive shaft.

Whatever it is, it's probably my fault and I'm going to slap myself. I'm a noob and excessively slow and methodical, crossing every T and dotting every i. I'm bracing for a big hit to my ego, hahahah!!!

If it's a loose tool, hit me in the face with humble pie! I was so proud of doing the three jobs "all by myself" (w pump, tstat, belt & pulleys, FMIC) and it was running great on the neighborhood test drive, then this annoying sound. Sit down noob! Check yourself, hahahah.