Humming sound

harkes · 05-10-2015, 10:08 PM

Hi

After installing my Pure Turbo I now have a humming sound from the turbo area.
Starting up the engine there is no problem but after the first revs I get a constant humming sound. We tried to listen our way to it with a piece of plastic tubing and it sound like its the wastegate solenoid.
Anyone know about problems with this?

I know the connector is off on the picture

PS: Disconnected the sound does not come back revving the engine...gotta be the solenoid right?

harkes · 05-12-2015, 01:09 AM

Video:

_bdiddyb_ · 06-08-2015, 01:16 AM

Same exact noise here harkes. I don't have Pure Turbo, just BMS stage 1 tune. Started happening about 3 weeks ago. Sounds like a large bumble bee under my hood. I thought it was a fan since it only comes on when engine warms up; and it's loud enough to be annoying. I didn't see any after researching. I thought about unplugging the wastegate solenoid to see if the sound goes away; but thanks for doing that!

So were you able to find a fix? ... replacing the solenoid?

harkes · 06-08-2015, 01:22 AM

_bdiddyb_
Yes, I replaced the Solenoid - 5min job. All good now

05-10-2015, 10:08 PM	#1
harkes Colonel 1078 Rep 2,358 Posts Drives: M135i, E39 M5, NSX and AE86 Join Date: Apr 2014 Location: Xiamen, China iTrader: (0)	Humming sound - wastegate solenoid? Hi After installing my Pure Turbo I now have a humming sound from the turbo area. Starting up the engine there is no problem but after the first revs I get a constant humming sound. We tried to listen our way to it with a piece of plastic tubing and it sound like its the wastegate solenoid. Anyone know about problems with this? I know the connector is off on the picture PS: Disconnected the sound does not come back revving the engine...gotta be the solenoid right? Attached Images __________________ M135i 8AT PWG, MHD, Pure Stage2, WMI via Torqbyte CM5-LT, Custom tuned by PureBoost (A Dane in China) Last edited by harkes; 05-10-2015 at 10:26 PM..
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05-12-2015, 01:09 AM	#2
harkes Colonel 1078 Rep 2,358 Posts Drives: M135i, E39 M5, NSX and AE86 Join Date: Apr 2014 Location: Xiamen, China iTrader: (0)	Video: __________________ M135i 8AT PWG, MHD, Pure Stage2, WMI via Torqbyte CM5-LT, Custom tuned by PureBoost (A Dane in China)
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06-08-2015, 01:16 AM	#3
_bdiddyb_ Lieutenant 215 Rep 558 Posts Drives: 2013 335i Join Date: Aug 2013 Location: California iTrader: (1)	Same exact noise here harkes. I don't have Pure Turbo, just BMS stage 1 tune. Started happening about 3 weeks ago. Sounds like a large bumble bee under my hood. I thought it was a fan since it only comes on when engine warms up; and it's loud enough to be annoying. I didn't see any after researching. I thought about unplugging the wastegate solenoid to see if the sound goes away; but thanks for doing that! So were you able to find a fix? ... replacing the solenoid?
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06-08-2015, 01:22 AM	#4
harkes Colonel 1078 Rep 2,358 Posts Drives: M135i, E39 M5, NSX and AE86 Join Date: Apr 2014 Location: Xiamen, China iTrader: (0)	_bdiddyb_ Yes, I replaced the Solenoid - 5min job. All good now __________________ M135i 8AT PWG, MHD, Pure Stage2, WMI via Torqbyte CM5-LT, Custom tuned by PureBoost (A Dane in China)
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