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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > What are the known fixes for wastegate rattle ?



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      07-10-2014, 11:04 AM   #1
datbimmer
Wastegate Rattle
 
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What are the known fixes for wastegate rattle ?

There was something about attaching a spring to the actuator rod and also something about using some sort of shim ? Anyone has actual pictures of what they did and helped ?

Replacing the vacuum hoses
Adjusting the actuator rod

What else ?

Last edited by datbimmer; 07-10-2014 at 04:04 PM.
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      07-10-2014, 12:14 PM   #2
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These are the ones I tried and none worked for me:
1. Search "redneck wastegate fix" it's a spring attached to the actuator rod to provide tension.
2. Add a shim behind the e-clip on the rod arm. I tried this, here's a pic. didn't do anything for me..
Untitled by c.merritt, on Flickr
3. Try tuning to adjust the default wastegate position-also didn't work for me
4. Adjust the actuator rod-didn't work for me.

After trying all of these, I still had a rattle and so I am just living with it. Other things I haven't tried yet are:
1. check boost solenoids (my next step once I get time and $)
2. check front turbo
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      07-10-2014, 03:32 PM   #3
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Thanks for your post. I noticed that on my car that small shim is not there anymore. I also already tried the spring thing and that didn't do anything.
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      07-10-2014, 03:47 PM   #4
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JB4 does a half way decent job at masking it with WG fix.. but the only fullproof way to completely eliminate it is new upgraded turbos.. even my brand new BMW turbos rattled..
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      07-10-2014, 03:56 PM   #5
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Quote:
Originally Posted by Hokie_BMW View Post
These are the ones I tried and none worked for me:
1. Search "redneck wastegate fix" it's a spring attached to the actuator rod to provide tension.
2. Add a shim behind the e-clip on the rod arm. I tried this, here's a pic. didn't do anything for me..
Untitled by c.merritt, on Flickr
3. Try tuning to adjust the default wastegate position-also didn't work for me
4. Adjust the actuator rod-didn't work for me.

After trying all of these, I still had a rattle and so I am just living with it. Other things I haven't tried yet are:
1. check boost solenoids (my next step once I get time and $)
2. check front turbo
do you know how to check the solenoids for proper function?
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      07-10-2014, 03:57 PM   #6
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Quote:
Originally Posted by tc535i
Quote:
Originally Posted by Hokie_BMW View Post
These are the ones I tried and none worked for me:
1. Search "redneck wastegate fix" it's a spring attached to the actuator rod to provide tension.
2. Add a shim behind the e-clip on the rod arm. I tried this, here's a pic. didn't do anything for me..
Untitled by c.merritt, on Flickr
3. Try tuning to adjust the default wastegate position-also didn't work for me
4. Adjust the actuator rod-didn't work for me.

After trying all of these, I still had a rattle and so I am just living with it. Other things I haven't tried yet are:
1. check boost solenoids (my next step once I get time and $)
2. check front turbo
do you know how to check the solenoids for proper function?
Besides replacing them, no. Been trying to find a way to test mine
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      07-10-2014, 04:06 PM   #7
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So the plan for me is to find some 3.5mm hose tonight and try replacing the damn vacuum hoses. I have added a link for that in first post. I will let you know if it helps. If it doesn't I will try to adjust the rod but it's a pain to get in there and it's rusted.
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      07-25-2014, 06:47 PM   #8
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Nothing so far... I wasn't able to adjust the rod
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      07-26-2014, 02:57 AM   #9
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Did you replace the vacuum hoses?
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      07-26-2014, 05:10 AM   #10
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Quote:
Originally Posted by tc535i View Post
do you know how to check the solenoids for proper function?
http://www.n54tech.com/forums/showthread.php?t=16548

Guys. There are different types of rattle. It is important to determine which one you have.

WM
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      07-26-2014, 08:32 AM   #11
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Basically some instances of wastegate rattle can't be corrected without replacement. My front one rattled like hell and the wastegate valve shaft had tons of axial play. I didn't figure this out until I pulled them. A set of Rb's fixed the rattle and I picked up tons of power.
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      07-28-2014, 12:07 PM   #12
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Working on it. ( vacuum hoses ). I'm at work now, can't see the video on the n54 forum. Will check tonight, thanks guys !
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      07-28-2014, 12:10 PM   #13
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Rb's can rattle as well. I think Vargas turbos are the only ones I've heard of that don't rattle.....yet
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      07-28-2014, 12:36 PM   #14
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Quote:
Originally Posted by 11SEC View Post
Rb's can rattle as well. I think Vargas turbos are the only ones I've heard of that don't rattle.....yet
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