The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Humming sound (comes and goes) S90-V90 1998

posted by  RK on  Tue Nov 26 03:36 CST 2002
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

hello, everybody

My wife (who, by the way, is the primary driver of our S90) started complaining about the humming sound she hears when idling at traffic lights. If I had to describe it, I would say that the sound is kind of similar to the PAIR pump noise which can be heard during the first 70 seconds after the cold start. But I don't know yet if it is caused by the PAIR. This is a low humming noise. It comes and goes (not constant). Most of the time I can hear it comes during idling at an intersection (especially if the radio is turned off :) It does not happen at every intetsection. Could it be the PAIR pump? Is this normal? I've read that the PAIR system is activated mainly when the engine is cold. I figured, the pump should not be working at normal operating temperatures. Anybody else can hear the low "humming" noise?

Raphael





USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.