Loud rattle sound - 986 boxster

[ooid]

The car just developed this rattle sound, when driving at low speed after warming up, 0-15 m.p.h.looks like coming from the back? I have driven about 150 miles today in motorway, the sound goes away completely while driving high speed and there is no other symptoms apart from this sound during stationary or low speed? The sound was also stopping or reducing while moving the steering during stationary but it does not help anymore. Video below;

https://www.youtube.com/watch?v=tIqlrQkd5BQ

Recently has an IMS update, new clutch+flywheel, and loads of major works in the engine.

PS: no change on the oil and coolant levels, no sign of overheating and etc. so far. Some suggest it might be rear shock absorbers or heatshield?

Any feedback would be great!

[ooid]

It's quite strange, the car is absolutely silent while driving. First I thought it has to do with steering, as while moving the steering slowly left-right at a traffic light, the noise was going away and it only develops after driving a few miles.

[ooid]

Ozone said:

Ours does this, I think it's the heat shield above the exhaust rattling. I could be wrong, best to get it looked at if you're worried

If it's heat shield, I'm wondering how come the steering was affecting the noise while stationary? Well not anymore.

[ooid]

Thank you all.

Loads of things to be checked this weekend, (Water pump and power steering fluid has been checked already bu no leak)

Another strange observation, If the car is on a slope (seen below) the noise disappears. On motorway, it's absolutely silent though, I have not felt any strange reaction from clutch, or engine so far while driving.

[ooid]

Thanks all. It has been confirmed, Bloody heat shields!

To inform others for similar issue in the future, this could well be Water pump as cmoose suggested earlier but here are also some other possibilities;

1 - Rear Shock Absorbers
2 - Steering Pump
3 - Exhaust / CAT
4 - Water pump
5- Broken or loose engine mount

[ooid]

jez, just remember posting this, totally scared the crap out of me back than!

This, indeed was catalytic converter heat shields. They sound super-scary, when they go. A good indy must have a look properly though, before deciding that, anything might go wrong in there, one never knows! If it's heat-shields, super simple cheap solution

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anonymous said:

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Hi cmoose, do you still have the red cayman? I think I saw you today near prior park. I was in friends 964 (weird purple-ish colour, with rusty wheels), just after we passed a nice black Mclaren.

[ooid]

Mad coincidence but somehow remembered your plate vaguely from the pics you post here! Glad, I was not in a Boxster or any convertible, so cold yesterday! There are some fun roads there, we drove around a bit Combe Hay. Hope to visit again maybe in summer,