Rattle at 3k (now 4k) Revs - Heatshield? - Exhausts Forum - Peugeot 306 GTi-6 & Rallye Owners Club

Post #1

So, I get a rattle at 3k (now 4k) revs at idle, is this a heatshield or something?
Cheers

Post #2

heatshield or could be cat breaking up if you have one. had this on my HDI the other month and it was the innards of the cat

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Post #3

Thought it could have been the cat too, hope not, cheers for the info

Post #4

just take it off, beat the insides out, refit. diy decat done in 30mins

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Post #5

Not when its a petrol, and youve got to get into it by cutting then get someone to weld it back up, may as well get a new one for a bit more, fair enough on a HDI but not a petrol

Post #6

I'd suggest jacking the car up and shaking the exhaust at various points and seeing where it hits a heatshield or which bit has rattly insides.

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61k miles Ph.1 Diablo '6 Project Thread

Post #7

Thats a great idea, thanks very much Smile

Post #8

It might be the same issue as mine, My exhaust cam covers heatshield isnt on as the thread is ******.
Replacing my exhaust cam cover on the weekend

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Ex- Phase 3 China GTi-6 T-Reg

Post #9

Checked exhaust this afternoon, no rattles, pretty smokey when revving it to 3k in neutral - cat stuffed?

Post #10

Could be, where is it located so I can check mine? cheers

Post #11

coil pack cover bolts Yes

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***Breaking*** Ph3 Silver GTI 6 High Boost Superman

Post #12

Thanks for the info, will have a look when i get a chance Smile

Post #13

Is this rattle present when engine is cold ?

Post #14

It is, after just being started up

Post #15

Its not the coil pack cover bolts 6waysforward as ive tightened all but one of them fully up (the other tightened up 3/4 of the way and didnt want to turn any further) and the rattle is still there at 4k now

Post #16

MY95 wrote:

Oh well, worth a shot.
It happened to me a few years ago and i had the car on a ramp 3 times to find it. It was only by chance i noticed one or two of the cpc bolts were loose causing the cover to vibrate and sound like a headshield rattle.

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***Breaking*** Ph3 Silver GTI 6 High Boost Superman

Post #17

Oh right, thanks for the guidance anyway! Smile

I have an idea its the heatshield if its went from being heard at 3k to 4k now, sounds the most logical

Post #18

My heatshield used to vibrate, I checked the bolts and they were all tight, I then slackened them off slightly, wiggled it about a bit and retightened, noise gone Smile

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'90 1.6 205 GTi, '98 306 GTi-6

Post #19

Cheers, which heatshield as I had a look on servicebox before and there were many? Smile

Post #20

The one that bolts to the exhaust cam cover.

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'90 1.6 205 GTi, '98 306 GTi-6

Post #21

cheers! which ones that on the diagram? http://public.servicebox.peugeot.com/docapv/affiche.do?ref=N5A117H10A&refaff=N5A%201%2017H10A&idFct=FCT0512

Post #22

Have you checked the exhaust isn't too close to any of the heat shields under the car ? Check the cat as well as aftermarket cats usually are a poor design at sit close to the heat shield

Post #23

Had this many times with a 6 engine usually either the heat shield behind the cam cover as said or it's the fire ring between the manifold and down pipe that's warn down causing a terrible noise at about 4K.

If your under the car you'd think it was the cat falling to bits but it's only the big round seal in the joint before the cat gone.

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Post #24

Thanks guys
I havent checked it bigbadbowen yet so thats to do, cat looks pretty newish so theres another thing to check
I will also have to check that armzs16 haha, easy enough to spot on servicebox and cheap to replace if shot?