Volvo RWD 900 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 5/2005 900 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

last ditch effort. codes 231 and 221. 900 1993

posted by  pollu_sean on  Sun Mar 20 18:02 CST 2011
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Jun 9 08:30 CST 2011
[RELATED]

so, I posted about this before, but still haven't figured it out.

the engine sets code 231 and 221 about every 200 miles. if I reset the system it drives fine for that time, then sets the code. sometimes the idle will pulse or hunt a bit. I cannot figure out what I am missing. changed the RPM sensor last week, which did nothing to improve the situation.

changed all the vacuum connectors that I could fine. I don't think I have an air leak anywhere, but it is surely still possible with the age of the car.


fuel pressure? o2 sensor? (i think the o2 is about 50,000 miles old).

???


is there anything worse than an intermittent problem?

Sean

http://www.brickboard.com/FAQ/700-900/EngineOBDCodes.htm






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New last ditch effort. codes 231 and 221. [900][1993]
posted by  pollu_sean  on Sun Mar 20 18:02 CST 2011 >


<< < > >>



©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.