Under Car Heat Shield Rattle

[Othen]

The hear shields under the back of my 2013 diesel Superb Elegance estate started rattling 2 weeks ago. I had a look underneath and found that one of these fasteners was completely rusted through:

 

 

…and a second was on its way. I’ve replaced the two rusty star washers with new ones today and it is quieter, but I still get the odd rattle. I’m wondering whether there should be some barrier or sound deadening material between the two heat shields where they overlap - which has perhaps fallen out?

 

Does anyone know?

 

Alan

[a666andy]

I can't answer that specifically but it may also be worth checking neither of the rear springs has broken.

 

I found some of my star washers missing or corroded after pulling off the drive and hearing a metallic ping bang, replaced them and still had some strange metal knocking which turned out to be a broken spring.

[Othen]

37 minutes ago, a666andy said:

I can't answer that specifically but it may also be worth checking neither of the rear springs has broken.

 

I found some of my star washers missing or corroded after pulling off the drive and hearing a metallic ping bang, replaced them and still had some strange metal knocking which turned out to be a broken spring.

Many thanks.

I changed the rear springs in July for the MoT - so it is perhaps unlikely they have failed already, but I'll check tomorrow anyway.

 

Alan 

[Snapper1725]

My sons was rattling on his Seat Ibiza.

Its held on the same and was rotten loose like that.

What I done was cut four squares out of an old thinish door mat ( felt/wire type and quite stiff) and just poked a knife through middle.

put one piece either side of heat shield and refitted the spring washers.

Worked a treat 👍

 

[Othen]

8 hours ago, Snapper1725 said:

My sons was rattling on his Seat Ibiza.

Its held on the same and was rotten loose like that.

What I done was cut four squares out of an old thinish door mat ( felt/wire type and quite stiff) and just poked a knife through middle.

put one piece either side of heat shield and refitted the spring washers.

Worked a treat 👍

 

Many thanks.

Alan 

[Othen]

I had another look at the heat shield today - the rear end rattle had persisted. The aluminium sheet around the middle of the three fasteners had worn away a bit so I made up a large aluminium washer (about 2”) like this:

 

 

 

… which I thought a neat solution, but still the rattle persisted. I jacked up the car and checked the (nearly new) springs, which were fine, then accidentally came across the culprit: the cover for the NSR disc was not attached:

 

 

the metal surrounding the three securing screws had all worn away, allowing the cover to flop around. I’ll start a new thread to work out how I’ll fix it 🙂

 

Alan

 

 

[a666andy]

When my dust shields went on my old Peugeot they just got removed, more hassle to replace than their actual usefulness in my opinion

[foru2justnv]

On 06/09/2022 at 13:09, Othen said:

I had another look at the heat shield today - the rear end rattle had persisted. The aluminium sheet around the middle of the three fasteners had worn away a bit so I made up a large aluminium washer (about 2”) like this:

 

 

 

… which I thought a neat solution, but still the rattle persisted. I jacked up the car and checked the (nearly new) springs, which were fine, then accidentally came across the culprit: the cover for the NSR disc was not attached:

 

 

the metal surrounding the three securing screws had all worn away, allowing the cover to flop around. I’ll start a new thread to work out how I’ll fix it 🙂

 

Alan

 

 

Penny washers

[StevesTruck]

On 06/09/2022 at 13:09, Othen said:

I had another look at the heat shield today - the rear end rattle had persisted. The aluminium sheet around the middle of the three fasteners had worn away a bit so I made up a large aluminium washer (about 2”) like this:

 

 

 

… which I thought a neat solution, but still the rattle persisted. I jacked up the car and checked the (nearly new) springs, which were fine, then accidentally came across the culprit: the cover for the NSR disc was not attached:

 

 

the metal surrounding the three securing screws had all worn away, allowing the cover to flop around. I’ll start a new thread to work out how I’ll fix it 🙂

 

Alan

 

 

 

The bottom of a beer can also works quite well. I couldn't get a genuine part, but Staropramen is Czech, so I thought that's probably as close to OEM as you'll find. 

[nough]

I, too, have a Skoda superb 2013, with a loose heat shield. I tried to fix it with the aforementioned beer can bottoms, and retained a little shaking.

 

I'll take a look at a few of these discussions.

[nough]

It was both a heat shield and the dust cover for the breaks, yet to fix the dust cover! Thanks for the idea!