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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Check Engine Light/Diagnostics 200 1990

posted by  someone claiming to be Manolo on  Tue Aug 16 02:43 CST 2005 [RELATED]

I can't speak to the hierarchy of the codes, but it seems to take quite a bit to set codes. My '90 has had a sooty exhaust pipe and decreased mileage for months and I have no codes.

I tried a new O2 sensor last week (OEM Bosch, $83 at Autohaus). If the problem persists, I'll try a new fuel pressure regulator and then perhaps start pulling injectors.

Does the '90 have a 5th (cold-start) injector like my '91? If so, unplug it and see if it helps. The time/temperature control on that injector can fail and cause it to run all the time. My '91 had that problem when it had 100 miles on it. You don't need that 5th injector unless you live in Canada. My car started at -10F with it unplugged.






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.