HOW DO I DIFFERENTIATE A SOUND THAT MAY BE A BAD "AIR PUMP" FROM AN TYPE OF NOISE AT STARTUP?

2000 SAAB 9-3

Tiny

annie a

March, 30, 2012 AT 1:37 PM

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

4 Answers

Tiny

fixitmr

March, 30, 2012 AT 3:23 PM

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.

Tiny

fixitmr

March, 30, 2012 AT 3:26 PM

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

Tiny

djcl

March, 30, 2012 AT 5:00 PM

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

Tiny

fixitmr

March, 30, 2012 AT 9:49 PM

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

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