Help fluttering noise when accelerating (1 Viewer)

[DPA200]

About 3 weeks ago i started to get a really annoying new noise when accelerating. 1st was just hoping it'd go away, but it hasn't. I also haven't been able to figure out what the cause is as it's somewhat sporadic when it happens. It'll go away for days at a time, then comes back. Here is what i know. Sounds like a fluttering noise, best i can describe it.

• 2008 land Cruise
• 125k miles ish
• Usually hear the noise around 1500rpm, usually around 25 mph. It did happen a couple times at highway speed
• Usually when the engine is cold, but has also happened when it was not cold. I live in AZ, so it's never that cold
• 100% of the time its when i accelerate

Any ideas on what to look into? The noise started about 3 weeks ago. It started the day after i replaced my rear brake pads, but i can't think of anything with that related. The noise has been eating away at me, driving me a bit crazy.

here is my youtube post so you can hear:

 

[BRob2756]

I’ve got something similar coming from my B-pillars on both sides. Can’t figure it out. Have you tracked down the location of the noise?

 

[Sinister]

I don’t know, but it sounds like an exhaust leak on my headphones.

 

[DPA200]

exhaust leak a possibility. No i haven't tracked down where exactly its coming from. I was thinking of buying a go pro just for diagnosing things like this so i could attach to various areas. I'll inspect the exhaust a bit and see

 

[terdrocket]

exhaust leak a possibility. No i haven't tracked down where exactly its coming from. I was thinking of buying a go pro just for diagnosing things like this so i could attach to various areas. I'll inspect the exhaust a bit and see

As for a GoPro, buy an Amazon knock off that has good ratings. We affectionately call them NoPros. For the 50 to 60 bucks, they are fantastic.

 

[DPA200]

As for a GoPro, buy an Amazon knock off that has good ratings. We affectionately call them NoPros. For the 50 to 60 bucks, they are fantastic.

yeah i was gonna look for a used one on offerup. I dont plan to use for anything else but diagnosing rattles and noises. Good idea on the Nopro, any suggestions which one?

 

[terdrocket]

yeah i was gonna look for a used one on offerup. I dont plan to use for anything else but diagnosing rattles and noises. Good idea on the Nopro, any suggestions which one?

This NoPro has over 10,000 ratings averaging 4.5 stars. $59.99

 

[DPA200]

This NoPro has over 10,000 ratings averaging 4.5 stars. $59.99

20% off coupon too brought down to $47.99. Just ordered, says tomorrow am i'll have it. Thanks for the tip. used Go pro's mostly still way too expensive for even the older ones

 

[LXCruza]

Mine makes the exact same noise. LX570 with 198K km (123k miles). It only comes from driver side A pillar / behind the steering wheel area. I showed it to my mechanic, he said: there is nothing obvious and it is really hard to track down... I learned to live with it since then.

 

[DPA200]

Mine makes the exact same noise. LX570 with 198K km (123k miles). It only comes from driver side A pillar / behind the steering wheel area. I showed it to my mechanic, he said: there is nothing obvious and it is really hard to track down... I learned to live with it since then.

driving me crazy, makes it sounds like an old car! well after i get my GoPro/NoPro i'll try mounting in various areas. Yeah i didnt want to bring to my mechanic because the noise is so inconsistent i figure it's almost def that it wouldn't make the noise if i brought it. Also just revving in neutral i can't get it to make the noise, only happens when driving which is odd

 

[gentimmy]

Mine makes the exact same noise. LX570 with 198K km (123k miles). It only comes from driver side A pillar / behind the steering wheel area. I showed it to my mechanic, he said: there is nothing obvious and it is really hard to track down... I learned to live with it since then.

Same vehicle, same mileage, same noise in the same location. Glad it's not just me

 

[DPA200]

Well, at least we aren't alone

 

[LXCruza]

I'd say let's get to the bottom of this now that we have a thread. I'll check for leaks in exhaust pipes. (I'm lucky it is freezing up here so I should be able to find any leak easily).

 

[DPA200]

I'd say let's get to the bottom of this now that we have a thread. I'll check for leaks in exhaust pipes. (I'm lucky it is freezing up here so I should be able to find any leak easily).

i second that notion, i'm with you

 

[SQRRRL]

Check your windshield plastic all the way around. It may flutter once you get up to speed.

 

[DPA200]

Check your windshield plastic all the way around. It may flutter once you get up to speed.

Good thought, but for mine it's 100% only when i step on the accelerator

 

[DPA200]

Did a 5 minute visual check on the exhaust. No holes that I can see. Could still be a leak at any of the fittings. I heard you can do a check by spraying soap water on and then reving will try that next.

 

[DPA200]

 

[Ali FJ80]

Sound like the exhaust manifold is cracked.

 

[DPA200]

Sound like the exhaust manifold is cracked.

well if i need a new manifold it'd at least be a good excuse to also finally put my new starter in. I'll check tomorrow, was gonna hook my leaf blower up and try the soapy water trick