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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Scan tool 900 1996

posted by  edinphx on  Thu Jul 29 15:23 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

I have a general question about scan tools and a specific one about monitoring an O2 sensor.
I'm new to this forum and I was hoping someone could suggest a reasonably priced scan tool for the backyard mechanic that can be used with a laptop and will work on Volvo's.

Specific question on monitoring O2 sensors. The different documentation I've read suggests that this can be done with a digital voltmeter. I tried this and get a reading of .75 volts almost constant in the engine running state at idle speed. I then used an oscilloscope since I thought it might be pulse voltage. What i observed was that the level for the most part stayed at the .75 volt level, but there were very very narrow spikes (1-2 millisec at about a 50 millisec rate going in the negative direction to about the .4-.5 volt level. Is this the way the O2 sensor should act?
Volvo 960, 1996 - 57K miles






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.