UVK
Member
Hi all,
After diagnosing that the "mooing" sound was the EGR valve and not something more serious (thanks to this site) i made a couple of foam spacers to put between the bulkhead and the bracket to try and reduce the noise. Although this worked to a degree, it could still be heard and was very irritating.
I then did as others have done and detached it from the bulkhead completely just to confirm that the EGR was responsible. Doing this eradicated the sound 100% but i didn't like the thought of it just dangling there and stringing it up with a cable tie looked really crude imo.
I'm not sure what the Audi 'bobbin' kit looks like but there was no way i was going to shell out £70+? on a couple of rubber spacers! So i had the idea of making a couple of rubber bushes myself. I deduced that the reason i was still getting the resonance could be because the bracket was still in contact with the threaded nubs that protrude from the bulkhead to attach the EGR bracket. My idea was to make a bridge type bush that would indirectly attach the bracket to the bulkhead without either actually touching each other.
I sourced a length of rubber hose from a local scrappy for free and got to work! They say a pic paints a thousand words and everyone likes pics over text so the pics below should explain better than i could with words how i made them. I'm over the moon with the results! I don't think they look too bad saying they didn't cost me a bean and only around an hours work fudging about with how best to make them.
The best news is that they are now bolted up in more or less the same place and the noise/resonance produced post fitting is a big fat zero! There may be better ways of doing things but i couldn't find any info on it so i thought i'd share how i dealt with the problem - necessity breeds invention afterall! Hope this may in some way help other TDi owners who are suffering the "old macdonald had a farm" syndrome - with a moo, moo here, a moo moo there, here a moo, there a moo. . . . . . . .
After diagnosing that the "mooing" sound was the EGR valve and not something more serious (thanks to this site) i made a couple of foam spacers to put between the bulkhead and the bracket to try and reduce the noise. Although this worked to a degree, it could still be heard and was very irritating.
I then did as others have done and detached it from the bulkhead completely just to confirm that the EGR was responsible. Doing this eradicated the sound 100% but i didn't like the thought of it just dangling there and stringing it up with a cable tie looked really crude imo.
I'm not sure what the Audi 'bobbin' kit looks like but there was no way i was going to shell out £70+? on a couple of rubber spacers! So i had the idea of making a couple of rubber bushes myself. I deduced that the reason i was still getting the resonance could be because the bracket was still in contact with the threaded nubs that protrude from the bulkhead to attach the EGR bracket. My idea was to make a bridge type bush that would indirectly attach the bracket to the bulkhead without either actually touching each other.
I sourced a length of rubber hose from a local scrappy for free and got to work! They say a pic paints a thousand words and everyone likes pics over text so the pics below should explain better than i could with words how i made them. I'm over the moon with the results! I don't think they look too bad saying they didn't cost me a bean and only around an hours work fudging about with how best to make them.
The best news is that they are now bolted up in more or less the same place and the noise/resonance produced post fitting is a big fat zero! There may be better ways of doing things but i couldn't find any info on it so i thought i'd share how i dealt with the problem - necessity breeds invention afterall! Hope this may in some way help other TDi owners who are suffering the "old macdonald had a farm" syndrome - with a moo, moo here, a moo moo there, here a moo, there a moo. . . . . . . .