weird humming noise from turbos?

dr_dirtg · 12-04-2018, 10:58 PM

I'm getting this low frequency humming when i slightly press the gas pedal ( stationary/not driving). Maybe to describe it better it's more of a heavy/ deep air flow sound
it sounds like it could be the wastegate?

Any experience with such a thing?

335stoner · 12-05-2018, 06:28 AM

stock or tuned? intake or stock filter?? need more info than that...

when i was stock and i modified my air box it would make a hollow thudding noise that went with the pistons... i liked it, but i could only really point it to be from the EGR opening an low throttle.. now that i am tuned my setup is still the same and the sound is gone..

dr_dirtg · 12-05-2018, 12:54 PM

all stock. 100% stock.

(will be JRing soon but want to get my car to tip top shape first)

dr_dirtg · 12-07-2018, 08:42 AM

i may have solved it... although not exactly sure why.

I adjusted the two locking nuts on the wastegate rod. I haven't heard this turbulant humming noise since I did this.

335stoner · 12-07-2018, 02:44 PM

i don't know the specs on that rod, but you might want to figure out if it is in spec.. there is a thread by TDI somewhere.. it one of the big ones.. .

dr_dirtg · 12-08-2018, 10:35 PM

well after a few more days of driving, Its definetely this waste gate rod adjustment. I still have the humming but it's not as loud now and it doesn't hum and go away periodically on it's own. it's pretty much always humming but not as loud.

I have to find TDI's post... this will take hours

335stoner · 12-10-2018, 06:42 AM

It was Yozh's post! go grab your coffee.

https://www.e90post.com/forums/showt...ighlight=turbo

Yozh · 12-17-2018, 01:46 AM

Not the wastegate you are referring. It’s the turbo switchover. Wastegate rod is hard to adjust.

dr_dirtg · 12-18-2018, 10:38 AM

Quote:

Originally Posted by Yozh

Not the wastegate you are referring. It’s the turbo switchover. Wastegate rod is hard to adjust.

I read that long ass fullfilling post of yours... I will have to use it as a guide to check over my vacuum stuff.

The long rod is for turbo switch over? I thought it was for the wastegate?

nicklockard · 12-19-2018, 12:07 AM

Quote:

Originally Posted by dr_dirtg

I read that long ass fullfilling post of yours... I will have to use it as a guide to check over my vacuum stuff.

The long rod is for turbo switch over? I thought it was for the wastegate?

Waste gate rod is tucked between the large turbo snail halves--hard to reach and adjust as Yozh said. The one you can easily see and adjust with airbox removed is turbine switchover valve.

12-04-2018, 10:58 PM	#1
dr_dirtg Private First Class 39 Rep 167 Posts Drives: 335d Join Date: Jul 2013 Location: Canada iTrader: (0)	weird humming noise from turbos? I'm getting this low frequency humming when i slightly press the gas pedal ( stationary/not driving). Maybe to describe it better it's more of a heavy/ deep air flow sound it sounds like it could be the wastegate? Any experience with such a thing?
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12-05-2018, 06:28 AM	#2
335stoner BRR tuned 220 Rep 646 Posts Drives: 335D black Join Date: Nov 2016 Location: cypress tx iTrader: (0)	stock or tuned? intake or stock filter?? need more info than that... when i was stock and i modified my air box it would make a hollow thudding noise that went with the pistons... i liked it, but i could only really point it to be from the EGR opening an low throttle.. now that i am tuned my setup is still the same and the sound is gone.. __________________ BRR tuned and loving it!
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12-05-2018, 12:54 PM	#3
dr_dirtg Private First Class 39 Rep 167 Posts Drives: 335d Join Date: Jul 2013 Location: Canada iTrader: (0)	all stock. 100% stock. (will be JRing soon but want to get my car to tip top shape first)
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12-07-2018, 08:42 AM	#4
dr_dirtg Private First Class 39 Rep 167 Posts Drives: 335d Join Date: Jul 2013 Location: Canada iTrader: (0)	i may have solved it... although not exactly sure why. I adjusted the two locking nuts on the wastegate rod. I haven't heard this turbulant humming noise since I did this.
	Appreciate 0 Quote

12-07-2018, 02:44 PM	#5
335stoner BRR tuned 220 Rep 646 Posts Drives: 335D black Join Date: Nov 2016 Location: cypress tx iTrader: (0)	i don't know the specs on that rod, but you might want to figure out if it is in spec.. there is a thread by TDI somewhere.. it one of the big ones.. . __________________ BRR tuned and loving it!
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12-08-2018, 10:35 PM	#6
dr_dirtg Private First Class 39 Rep 167 Posts Drives: 335d Join Date: Jul 2013 Location: Canada iTrader: (0)	well after a few more days of driving, Its definetely this waste gate rod adjustment. I still have the humming but it's not as loud now and it doesn't hum and go away periodically on it's own. it's pretty much always humming but not as loud. I have to find TDI's post... this will take hours
	Appreciate 0 Quote

12-10-2018, 06:42 AM	#7
335stoner BRR tuned 220 Rep 646 Posts Drives: 335D black Join Date: Nov 2016 Location: cypress tx iTrader: (0)	It was Yozh's post! go grab your coffee. https://www.e90post.com/forums/showt...ighlight=turbo __________________ BRR tuned and loving it!
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12-17-2018, 01:46 AM	#8
Yozh Colonel 870 Rep 2,615 Posts Drives: 2011 335d M-Sport Join Date: Mar 2014 Location: Wet Coast iTrader: (4)	Not the wastegate you are referring. It’s the turbo switchover. Wastegate rod is hard to adjust.
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