Volvo AWD 850 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2010 850 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Secondary Air Pump Staying On...Kills Battery 850 1997

posted by  N.P. on  Mon Aug 24 06:01 CST 2009
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Nov 17 21:02 CST 2013
[RELATED]

Yep. That's pretty much it. I bought the pump used but it was PRISTINE, so I'm thinking it's a relay?

I've unplugged it but have heard that's a bad idea for the long run.

Thanks in advance for any and all input.

N.








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Secondary Air Pump Staying On...Kills Battery 850 1997

    uid 47978's pic
    posted by  FCP Euro on  Mon Aug 24 08:38 CST 2009
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Jun 21 05:36 CST 2013
    [RELATED]

    I am also thinking it is a relay. The relay is probably stuck in the on position. Replace it and see if that fixes the issue. Better yet, remove it and see if the pump turns off. Then you will know for sure if it is the relay.
    --
    FCP Groton








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Secondary Air Pump Staying On...Kills Battery 850 1997

      posted by  N.P. on  Mon Aug 24 15:38 CST 2009
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Sun Nov 17 21:02 CST 2013
      [RELATED]

      Thanks for the suggestions. Do you know where I would find that relay?








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Secondary Air Pump Staying On...Kills Battery 850 1997

        posted by  DJBybee on  Tue Aug 25 13:58 CST 2009
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Sat Oct 10 18:07 CST 2009
        [RELATED]

        Almost for certain its a relay failure. Its right down there under the battery beside the air pump itself. Looks a bit like the cooling fan relay on the radiator fan shroud. Being in a low and prone spot they fill up with water and corrode. I don't see any consequence to leaving the air pump out of the equation besides a check engine light. Introduces oxygen into the exhaust to help the cat heat up faster. Good luck.







<< < > >>



©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.