2005 boxster s - buzzing sound at 3k?

[eslai]

I can't say i've noticed this sound but the dealership should work with you on isolating it. I already had them take care of one rattle for me.

[mrsparkle]

I have the same problem in my 987S. It only happens when you first drive off a exactly 3k rpm and some times going downhill. I can get it to rattle 90% of the time when the engine is cold or hot if I stop the car, shut the engine off, wait a couple minutes and startup and drive. Try that and see if you can get it to rattle and use that as your test if you take it to the dealer.

I took mine to the dealer and they gave me the run around about it being a stuck valve lifter, nothing to worry about. The only way they would look at it if it was happening on a consistant basis. I'm not worried about it, but it's very annoying coming from my first Porsche.

I have 3k miles and it is still happens once in a while. It has calmed down a bit but not completely.

Here's a link on another forum that has a similar problem. http://www.boxa.net/forum/index.php?showtopic=16897

Btw, where was yours built in? My box was made in Finland.
Look at your VIN number at the 11th digit -

'S' means Stuttgart
'U' means Finland built.

Maybe there was a bad batch.

Please post if you have any luck with the dealer on this problem.

Now my passenger window is making noise when rolled up or down. I'm going to wait until I have a couple more problems before I take it in....but I still love my Box.

[RandallNeighbour]

Jester, I followed the boxa.net link above and clicked on a bunch of other threads linked in that thread. Found this:

"Porsche in Frankfurt have 'admitted' the oil relief valves are at fault - and as a result are SPECIALLY making another one fit for purpose... they are at present not at the OPC's (to my knowledge) - so don't all rush out to get one fitted..."

You may want to inquire with your service advisor if this has been checked on your car as the source of the buzzing.

[mrsparkle]

I just checkout the post myself.

Didn't know they updated it.

If you read further down in the post it states possible reasons why the rattling occurs.

"I think the sound is likely cavitation, which basically occurs when a pump is pressurizing oil with air in it or theres not enough oil feed to a pump. If the relief valve is opening too early or too much in cold running (ie higher viscosity oil which = higher pressure, and also reluctance to flow into the pump) its possible the pump is being starved of oil, or being fed oil with air in it.. The air is compressed (assuming for the mo that oil is incompressible) and implodes which over time will diesel (or burn) the oil, and will reduce the oil life, increase the acidity of the oil and damage components, making matters worse...

When cavitation occurs (particularly on leading edges of pressure equipment, ie pump lobes/gears) the material in these areas is damaged causing a drop in performance and "sealing" making the matter progressively worse. This may explain why a new oil pump helped for a short while, but eventually the problem came back..."

[jester]

Thanks MrSparkle. Glad to hear I'm not the only one. I'm not too worried about it either... mine has happened less recently but I have exactly the same "symptoms" as you. Hot or cold... right at 3k.

I just accelerate hard now past the 3k mark to make sure I don't hear it

I didn't go the dealer route yet... no time and I figured they would give me the run around too.

Mine has an S in the VIN. I heard most of them are built in Finland though....

Now I'm looking at my exhaust tip.... I'll have to take a pic of it... it seems a little low compared to the online pics I've seen of the S. Maybe I'm just thinking it.

Originally Posted by mrsparkle

I have the same problem in my 987S. It only happens when you first drive off a exactly 3k rpm and some times going downhill. I can get it to rattle 90% of the time when the engine is cold or hot if I stop the car, shut the engine off, wait a couple minutes and startup and drive. Try that and see if you can get it to rattle and use that as your test if you take it to the dealer.

I took mine to the dealer and they gave me the run around about it being a stuck valve lifter, nothing to worry about. The only way they would look at it if it was happening on a consistant basis. I'm not worried about it, but it's very annoying coming from my first Porsche.

I have 3k miles and it is still happens once in a while. It has calmed down a bit but not completely.

Here's a link on another forum that has a similar problem. http://www.boxa.net/forum/index.php?showtopic=16897

Btw, where was yours built in? My box was made in Finland.
Look at your VIN number at the 11th digit -

'S' means Stuttgart
'U' means Finland built.

Maybe there was a bad batch.

Please post if you have any luck with the dealer on this problem.

Now my passenger window is making noise when rolled up or down. I'm going to wait until I have a couple more problems before I take it in....but I still love my Box.

[woreilly]

My 2005 S 6speed started doing the same thing a few days ago at 550 miles.

Bill

[G3sys]

my 05 makes a rattle noise for 2-3 seconds when driving with the engine cold, around 140 degrees... it won't do it again until the car is completely cold again.

the noise definately comes from the front of the car.

it does it every time i drive during warm up.

mine was built in stuttgart, regular box.

[mrsparkle]

I took my 987S in for an early oil change and to fix the passenger's window noise the other day. Just for kicks, I had them check the rattling noise. The last dealer I took it to brushed me off. Said it was no problem. Found out today that they are going to replace the motor. It is some rare problem with something in the crankcase. They wouldn't give me the details.

I am a little relieved that they are aware of the problem but I'm not too fond of swapping out the motor. Now I have to break it in...AGAIN.

I hope they don't charge me for the oil change.

MrSparkle

Mrsparkle, G3sys, woreilly, Jester and SMC:

Please keep the forum posted on this thread and continued developments.

This is scarring the ba-jesus out of me!

[jester]

Whoa! Replace the motor? And here I was just getting used to that sound...
I'm taking it in then.

Originally Posted by mrsparkle

I took my 987S in for an early oil change and to fix the passenger's window noise the other day. Just for kicks, I had them check the rattling noise. The last dealer I took it to brushed me off. Said it was no problem. Found out today that they are going to replace the motor. It is some rare problem with something in the crankcase. They wouldn't give me the details.

I am a little relieved that they are aware of the problem but I'm not too fond of swapping out the motor. Now I have to break it in...AGAIN.

I hope they don't charge me for the oil change.

MrSparkle