Rattle ONLY when shutting/turning engine off. - The Unofficial BMW M5 Messageboard (m5board.com)

M5.Tom. · 7th November 2009, 21:44

Guys,

I know there is one thread sort of discussing this, but I've done a search and there's nothing with the same noise I have.

My engine runs fine, uses no oil, and is quiet. BUT. When shutting her down, there is a fairly loud rattle from the engine bay. It slows as the engine stops turning over.

Any ideas?

There's no rattle when blipping the accelerator etc.

Anyone else got this noise?

Cheers

jt2ma71 · 7th November 2009, 22:16

I have the same thing. No clue what it is. Vantaam thinks it was the tensioner located by the oil pump it wears so much it allows the chain to make contact with the timing cover. Im not sure if replacing it fixed his problem or not. Ive heard quite a few M5's with that problem.

Do you also hear a metalic click when you "stab" the pedal from idle to rev it?

Steve Mac · 7th November 2009, 22:21

Try shutting down with the clutch pedal pressed to negate a noisy clutch bearing

M5.Tom. · 7th November 2009, 22:21

That's the thing, no click at all.

Just this rattle as the engine stops turning over.......Hmmmmm.....

vantaam5 · 7th November 2009, 23:22

My shut off rattle got less,still have a rattle related to bank1 in idle and up to about 2000rpm,only sporadic!Will change tensioner for timing chain and vanos adjusting chain...Comes from one of both...
Keep you updated!

jt2ma71 · 8th November 2009, 00:28

Quote:

Originally Posted by vantaam5

My shut off rattle got less,still have a rattle related to bank1 in idle and up to about 2000rpm,only sporadic!Will change tensioner for timing chain and vanos adjusting chain...Comes from one of both...
Keep you updated!

Thank you! I would very much like to find out the issue. I appreciate all the work you've done and for posting up the information!!

vantaam5 · 8th November 2009, 00:34

No problem!This is what the board is for

These engine noises really make me sick!This is why I want to sort them out,also will refurb my Vanos units quite soon th get rid of the rattling,but the winters are long over here,so much time to work on the car

jt2ma71 · 8th November 2009, 00:59

Yeah i know wht you mean. Its kinda embarrasing turning off the car and hearing the rattle. Lots of people ask me what it is, i just tell them its vanos noise related to RPM. My bank1 vanos is very noisy too, i think i will be replcing most of it over winter too!

This car always leaves me lots of projects to work on!!

vantaam5 · 8th November 2009, 01:07

Have also too many projects with this one to list

Right now dealing with a bank1 exhaust Vanos issue!
At least it did not show for about a week a SES till the issue appeared

mkansas · 8th November 2009, 05:50

How about this one.I don't want to open another thread.There is a click when i shut engine off.Sound like a solenoid disengaging.Im not sure if this is normal or not.All those noise make me paranoid.Can't wait to get straight pipes installed.Then everything will be muted.