MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: AJP on August 11, 2016, 08:00:34 pm

Title: Wastegate rattle?
Post by: AJP on August 11, 2016, 08:00:34 pm: Just lately I've been hearing a slight metallic rattle on light throttle coming onto boost. Imagine a tiny bit of gravel or small ball bearing being shaken about inside a tin can, that's probably the closest description I can give! It's not very loud, but loud enough for me to hear it every time now I'm listening for it.

I've done a good search and one thing that keeps coming up is a loose wastegate rod. What's the best way of diagnosing this? And what's the cure if it does turn out to be the wastegate?

I'd imagine it's not the sort of thing that throws a fault code. Just hope it's nothing serious, whatever it is! I do plan on going k04/k03 hybrid at some point, but I'd like to get this sorted in the meantime while I'm on the k03.
Title: Re: Wastegate rattle?
Post by: Paradox1 on August 12, 2016, 10:55:21 am: I get the same rattle. mine is only on idle though. mine is definitely wastegate rattle but its quite common on TSI engines.
Title: Re: Wastegate rattle?
Post by: AJP on August 12, 2016, 11:43:20 am: Quote from: Paradox1 on August 12, 2016, 10:55:21 am
I get the same rattle. mine is only on idle though. mine is definitely wastegate rattle but its quite common on TSI engines.
Is it as simple a job as tightening it up and it's sorted?
Title: Re: Wastegate rattle?
Post by: Paradox1 on August 12, 2016, 12:06:24 pm: havent really had a look tbh.

I think it either needs tightening or its knocking on the heatshield, maybe bending the heatshield slightly may help in my case.
Worth checking if yours as come loose first though
Title: Re: Wastegate rattle?
Post by: AJP on August 12, 2016, 01:28:48 pm: Ok mate. It's going in for brakes soon so I'll get it looked at while it's there.
Title: Re: Wastegate rattle?
Post by: pudding on August 30, 2016, 04:29:47 pm: Need one of these do you think? https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/wastegate-actuator-rod-rattle-clip/06j145220a/

More common on the MK6, but not unheard of on MK5s also. Wiggle the actuator rod and if it's loose and wobbly, that clip should sort the noise.
Title: Re: Wastegate rattle?
Post by: rich83 on August 30, 2016, 04:36:37 pm: That won't fit the mk5 turbo.

I had this issue for about 6 months. I then had an updated Revo map put on and it fixed it. Weird.
Title: Re: Wastegate rattle?
Post by: AJP on August 30, 2016, 05:09:39 pm: Quote from: rich83 on August 30, 2016, 04:36:37 pm
That won't fit the mk5 turbo.

I had this issue for about 6 months. I then had an updated Revo map put on and it fixed it. Weird.
Did it do it with both a hot and cold engine Rich, or just when cold?

I don't know if what I'm experiencing is wastegate rattle (although it's the closest match I can attribute to the symptoms) or something else, possibly related to my misfire issue.
Title: Re: Wastegate rattle?
Post by: rich83 on August 30, 2016, 05:11:30 pm: Can't remember. Was 2/3 years ago. It was annoying as hell though
Title: Re: Wastegate rattle?
Post by: AJP on August 30, 2016, 05:16:02 pm: Quote from: rich83 on August 30, 2016, 05:11:30 pm
Can't remember. Was 2/3 years ago. It was annoying as hell though
How would you describe the sound?

I expect as a fellow musician you'll be able to describe it incredibly accurately
Title: Re: Wastegate rattle?
Post by: rich83 on August 30, 2016, 05:22:29 pm: :signLOL: