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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

960 check engine light mystery 900 1997

posted by  edgecombs on  Mon Feb 24 08:57 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Oct 13 07:18 CST 2001
[RELATED]

I have a 1997 960 that the check engine light keeps coming on for the same reason, indicating that the catalytic convertor is not operating properly. I have replaced the cat twice, both oxygen sensors, the intake manifold, the ecu, checked the wiring to the oxygen sensors. None of this is working. My tech (a Volvo specialist) has determined that the rear oxygen sensor, which should be more flatlined, is switching at exactly the same amplitude as the front oxygen sensor. When the car is driven under hard acceleration, the rear O2 sensor reads the way it is supposed to. Any ideas on why?






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.