How do I differentiate a sound that may be a bad "air pump" from another type of noise at startup?

Tiny
ANNIE A
  • 2000 SAAB 9-3
  • 125,000 MILES

It does seem to be at startup. It is sort of a "stress" sound. It isn't a whine, not a grinding or clanking. A steady sound and seems to go away after a minute or two. Usually after the car has been sitting. I have been advised it might be an "air pump" but was also told it might be a clogged oil screen. Any good way to make a best first stab at a fix? The air pump supposedly is not urgent but the clogged screen is worrisome to me. Thank you

Do you
have the same problem?
Yes
No
Friday, March 30th, 2012 AT 1:37 PM

4 Replies

Tiny
FIXITMR
  • MEMBER

Is air pump accessible under open hood? Use a listening device lie auto stethoscope to check it out? $5 at harbor freight. Or a vac wand us useful for directional sound locating.

Was this
answer
helpful?
Yes
No
Friday, March 30th, 2012 AT 3:23 PM
Tiny
FIXITMR
  • MEMBER

Why worry about oil screen? If oil pressure is ok it's ok.

Was this
answer
helpful?
Yes
No
Friday, March 30th, 2012 AT 3:26 PM
Tiny
DJCL
  • EXPERT
  • 786 POSTS

Un plug the air pump and see if the noise isn't there

Was this
answer
helpful?
Yes
No
Friday, March 30th, 2012 AT 5:00 PM
Tiny
FIXITMR
  • MEMBER

Oh, it's an electric pump not belt driven.

Was this
answer
helpful?
Yes
No
Friday, March 30th, 2012 AT 9:49 PM

Please login or register to post a reply.

Related Air Pump Noise Questions