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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

effects of dead knock sensor -- can anyone confirm? 900 1993

posted by  Kuba on  Wed Jun 11 10:45 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

Hi,

My 93 940 (136k) with B230F and Rex/Regina has rather constant loss of power across the board since a couple of weeks. I have cleaned the PCV bottle (oil separator), replaced the flame trap (was almost clogged shut), cleaned the throttle body, checked air filter (6 months old and about 7k miles on it -- looks fine), changed the plugs and wires (new ones are Bougicords), checked for vacuum leaks, checked fuel pressure regulator (return hose has flow at idle, diaphram intact, return hose flow reacts to removing/applying vacuum to the regulator). Didn't look under the distributor cap yet. Plugs were very old, wires were disintegrating and the change of plugs and wires improved things a little bit (the engine sound is different), but the heart of the problem is still there.

The diagnostic port no.6 indicates code for wrong/missing knock sensor signal. The check engine light comes on every 1-2 weeks and the port no.2 indicates code for idle mixture too lean/rich when the check engine light comes on.

Can anyone with a good knock sensor (almost everyone out there I hope) and Rex/Regina system confirm that disconnecting a working knock sensor causes rather noticeable loss of power, at least in 750-3000 RPM range?

Thanks as always, Kuba






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.