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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

WHAT IS THE KNOCK SENSOR??? 850 1997

posted by  Valles on  Mon Mar 11 04:53 CST 2002
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

TO add a few words to this....if you ever drove an older V-8 engined car you may have heard knocking. When using cheap gas (87 octane) you push the gas pedal to the floor to accelerate. When you do this you might hear what sounds like someone KNOCKING on your engine with a hammer. It is a very distinctive sound, it is also a very bad sound. On turbocharged engines it can be deadly to your motor.

The sound is made by the gas in the combustion chamber lighting off before it is supposed to, before the spark plug fires to start the combustion. Your gas engine is starting to act like a diesel engine....VERY BAD.

Knock sensors are essentially sophisticated microphones that listen for knocking. When it hears knocking it it tells the computer, which then adjusts engine timing, fuel mixture, or what ever else it needs to do to get rid of the knocking.

--
Nathan Valles, Black 855R, Tint






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.