I have an extremely loud rattle that sounds like it is coming from the engine bay.

I haven't been able to get a good video of it, but I found another on youtube with the same exact sound.

Any ideas? It is a 2010 X MR with 10k miles.

 

You're not talking about that constant sound right? The intermittent one?

 

Yea, the intermittent knocking/rattling.

 

Any codes? Car running fine? FPR hose on tight?

 

No codes, car runs perfectly fine. FPR hose is on tight.

 

Then it may not be anything to worry about? I'm not quite sure at this point.

 

I have that same noise, assuming its normal.

 

It's quite likely the SST Trans with some slop in there. My sponsor's car had the same rattle noise when It first got into my hands and I feared it was the engine until I did some research on the net. Once we sent the trans out to SSP to install the 500 hp clutchpacks it all sounds normal now and the rattle from the trans is much quieter. I remember Jeremy saying the 2008 trans was loose on his car and he had to redo the stack height to get it within spec, spending extra hours correcting the issue. Turns out there are some referb transmissions out there and not all of them are within spec even out of the gate.

 

My car sounds EXACTLY the same. As a matter of fact, it has sounded like this every cold fall & winter for the last 3 years. I notice the different sound every year when the temperature drops. Do you live in a cold weather climate? I don't know how cold would affect the sound of things, thats just what I have noticed over time

 

It isn't too cold here, but it does seem to do it more often when it is cold.