Saw noise on start up
Thread Starter
Instructor
Joined: Feb 2010
Posts: 206
Likes: 0
From: los angeles, ca
darn, you are probably right. The car only does it on a cold start. I have a warranty on it, so probably don't want to go through the hassle of having my check engine light turn on. Maybe I'll just go to porsche and tell them that there is a saw under my hood.
Race Director
Joined: Sep 2006
Posts: 19,035
Likes: 269
From: Bentonville, AR
Be sure to post a follow up. Ask how the cause of the noise was diagnosed?
(Might get a shrug and something non-committal: An auto mechanic friend of mine years ago told me that after a while when he or his co-workers saw a particular model of car come in they almost always knew what was wrong. Experience from working on the same brand of cars over the years pays off.)
Sincerely,
Macster.
Burning Brakes
Joined: Apr 2007
Posts: 870
Likes: 0
From: MA, the cradle of random driving
well son, y'all gotta realize that 'non of us poor folk eer got warentees. Yessire go right on to Porch now!
Rennlist Member
Joined: May 2005
Posts: 2,342
Likes: 251
So whatever happened with this? I've got a similar, but quieter, noise. It does seem to be the air pump as the noise changes/goes away with the pump unplugged. Do I just replace the pump, or could it be a hose/vacuum fitting somewhere in the system causing this?
Shawn
Shawn
Instructor
Joined: Oct 2008
Posts: 223
Likes: 0
From: SF Bay area
Sorry, no pics but
My air pump was doing the same thing, nasty saw like squeal when cold. I took it apart and found it was
chock-a-block full of brake dust. I blew it all out with compressed air, cleaned it all up and oiled the bearings upon reassembly. It has been blessedly quiet on cold starts for over one year now.
Super easy fix. Maybe 60 minutes fooling around.
My air pump was doing the same thing, nasty saw like squeal when cold. I took it apart and found it was
chock-a-block full of brake dust. I blew it all out with compressed air, cleaned it all up and oiled the bearings upon reassembly. It has been blessedly quiet on cold starts for over one year now.
Super easy fix. Maybe 60 minutes fooling around.
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Drifting
Joined: Mar 2009
Posts: 3,372
Likes: 68
From: West of Mosport!
40A fuse (big sq one) for air pump is located behind rear seats on a relay board. You'll pop a CEL as Mac says if you start it up and run it with the fuse out so you'll have to find someone with Durametric software to clear it for you if you can't do this yourself.
Drifting
Joined: Jul 2006
Posts: 2,163
Likes: 164
From: A twisty backroad in PA
It's painted black and you can clearly see the electric motor in the center of the unit.
Drifting
Joined: Jul 2006
Posts: 2,163
Likes: 164
From: A twisty backroad in PA
Sorry, no pics but
My air pump was doing the same thing, nasty saw like squeal when cold. I took it apart and found it was
chock-a-block full of brake dust. I blew it all out with compressed air, cleaned it all up and oiled the bearings upon reassembly. It has been blessedly quiet on cold starts for over one year now.
Super easy fix. Maybe 60 minutes fooling around.
My air pump was doing the same thing, nasty saw like squeal when cold. I took it apart and found it was
chock-a-block full of brake dust. I blew it all out with compressed air, cleaned it all up and oiled the bearings upon reassembly. It has been blessedly quiet on cold starts for over one year now.
Super easy fix. Maybe 60 minutes fooling around.
My car occasionally makes this sound upon start-up, however it doesn't do it everytime. I knew the sound was coming from the air pump but I just assumed the bearings were worn and I was eventually going to replace the unit. I'll give your cleaning trick a try.
