strange noise from front of motor at around 2800 rpm

[poorsche1]

2001 boxster S
this afternoon started to hear a rateling noise from the front of the motor when i drive. it is not there at idle but begins to resonate a fast clatering, rateling sound when i reach 2800 rpm and gets louder to about 3500 rpm. if i rev the motor i can hear it right behind me, always at the same rpm. what the hell can that be i parked it until i can work on it. tried to insert a mp3 recording of the sound but i can't figure out how

[Frodo]

I'm no expert, but...motor mount possible? Read the descriptions and see if they fit:

http://www.pedrosgarage.com/Site_3/Install_Front_Engine_Mount.html

http://www.pelicanparts.com/techarticles/Boxster_Tech/10-ENGINE-Engine_Mounts/10-ENGINE-Engine_Mounts.htm

...or do a Search here.

[poorsche1]

thanks for helping, but there is no vibration just a sickening schreechy clattering sound that starts around 2800rpm.

[Jake Raby]

Water Pump bearings.
Idler bearings.

Pull the serpentine belt, fire it up and see if it goes away, if so its a sub-system. if not, its internal and you should call me and DO NOT run it any longer :-)

[Frodo]

There ya go. I'd probably go with Jake's response...he knows a little more than me when it comes to Boxster repairs.

In any case, that's a pretty easy diagnostic to do. Let us know what happens.

[jmatta]

"Tick, Tick...BOOM"

I'd definitely listen to Jake's advice...

[poorsche1]

tic tic boom huh. thanks for your optemistic support well i got in from work and took the belt off, started it and wassss veerry glad to hear nothing so i guess it must be one of the attachments. although there was a small tick tick tick coming from the pasenger side of the motor i don't know if that is something normal. just glad to not hear the clattering sound from inside the motor.

[papasmurf]

making some noise which to some degrees is normal or sometimes the injectors make a clicking sound each time they fire.