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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

2-3-1 code won't go away 200 1989

posted by  Arthur on  Tue Apr 17 16:44 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Aug 2 07:35 CST 2014
[RELATED]

2-3-1 = compensating for lean or rich mixture at cruise.
I had this problem last year and it failed smog test. I finally put new cat and passed, but I don't think I really solved the problem. Now its back.

Runs smooth at cruise, rough at idle.
Plugs are clean so i think it is running lean.
Mileage is very consistent 10 Km/l = 23.5 mpg US, about 50% highway.

Over last year I have swapped out or replaced the following - no improvement (thank god for parts cars)
oxy sensor
crank sensor
fuel pumps (in-tank had died anyway)
FPR
dist cap + wires + plugs
air filter
fuel filter
intake bellows
intake manifold gasket
flame trap/oil separator
cannot find any vacuum leaks and TB is clean
no oil or water leaks
I even tried Italian tune-up

at idle(warm) it is missing on #4 cyl - found by unplugging injector.

I'm now thinking maybe low compression on #4, will test it next week.

I'm stumped - any ideas? Is it just getting old?

Arthur
'89 245, M47, 450,000 km






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.