E46 Fanatics Forum banner
  • Hey everyone! Enter your ride HERE to be a part of this month's Ride of the Month Challenge!

1 - 15 of 15 Posts

·
Registered
Joined
·
12 Posts
Discussion Starter · #1 ·
What causes that Jet-Engine sound on BMW's. Mine did it for sometime and it only does it sometimes. I miss that sound.
 

·
Registered
Joined
·
2,775 Posts
Secondary air pump going bad. Probably only happens when its cold?
 

·
Registered
E46 F10 W204 W212
Joined
·
5,171 Posts
Or a stuck Fan Clutch on a Mechanical Fan setup.

Or just a hot day out on same mechanical fan.

Paolo
 

·
Registered
Joined
·
2,441 Posts
Its the auto fan.
 

·
Registered
Joined
·
1,070 Posts
Could be your DISA valve is shot, it has a distinct "whine" noise with it but shouldn't be loud at all...
 

·
Registered
Joined
·
2,441 Posts

·
Registered
Joined
·
12 Posts
Discussion Starter · #11 ·
I own an 325ci, automatic. The elbow intake boot is good. There is no wine noise. I dont have a fan shroud installed. Fan clutch is new. I will look into changing the DISA valve soon hopefully that might help. Or any ideas??
 

·
Registered
Joined
·
30,072 Posts
I own an 325ci, automatic. The elbow intake boot is good. There is no wine noise. I dont have a fan shroud installed. Fan clutch is new. I will look into changing the DISA valve soon hopefully that might help. Or any ideas??
You might want to get that checked.
 
1 - 15 of 15 Posts
Top