Volvo RWD 700 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 3/2004 700 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Knock sensor, intermittent 'check engine light' 700 1990

posted by  yorkbrick on  Sun Dec 7 02:14 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

Hello,
I keep having a intermittant check engine light on my 90 745ti. I retreived the code which came up as a 3-1-2, which is in Chilton manual is Knock sensor enrichment signal. I checked 700 faqs, and said to check the wiring, everythings looks new! I read that a faulty KS does'nt throw a code, whats up?
Whats funny is that the "light" comes and goes? One day its on, one day its off.
The car does'nt seem to have any knock, not under load too. Do KS's go bad frequently? Will a intermittant light mean that the senor is going bad?
I did relocate the KS wire away from the alternator too.
Another note, I by passed the EGR valve, not using it. If that helps?
Thanks for any advise!






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Knock sensor, intermittent 'check engine light' [700][1990]
posted by  yorkbrick  on Sun Dec 7 02:14 CST 2003 >


<< < > >>



©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.