Volvo AWD Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2005

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Air Pump Rely Problem??

posted by  WatsonMD on  Sun Apr 25 11:37 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

OK - pulled the air pump & attached relay & the SAS Valve (near the turbo unit. Everything looked to be ok and fuctional. The Air Pump it self was dry and did not contain any water. The hoses were in great shape.

I cleaned the connectors and applied a small amount of dielectric grease to help waterproof if possible. Re-installed everything, including a new battery (gotta love Autozone for this - just swap and go).

Alarm starts off again - and work the locks to terminate. The Air pump didn't come on immediately with the new battery. So start the car - runs great!!! Shut down after a minute and no air pump - I thought.

Let the car run till up at operating temp, then took out for a brisk drive. Shut down the car and the air pump was still running. No codes or CEL as of yet. So I disconnected the batter to prevent it from running all nite and killing another battery.

So - I'm guessing the relay is bad. Or is it some other sensor that is giving bad info to the relay?? Any ideas other than replace the air pump relay and see if that works??

Thanks in advance - Andrew








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Air Pump Rely Problem??

    posted by  someone claiming to be Chrissij on  Sun Apr 25 17:40 CST 2004 [RELATED]

    I think I said try a relay first on your last post...yep, I looked back...I did. I know I'm a female and all, and that damn estrogen gets in the way of my thinking...but I did grow up in a shop...and I do OWN a Volvo shop...and I did go to Volvo school...and I am a Volvo Tech. Damn those ovaries!








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

      Air Pump Rely Problem??

      posted by  Axel on  Fri May 7 09:27 CST 2004
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Mon Mar 12 06:12 CST 2007
      [RELATED]

      Chrissij !
      Wow. 8-O easy! us guys all actually like girls.. as do some girls! :-)
      I actually know a fair number of mechanically competent women.. to bad there
      isnt a higher percentage.. then the two sexes would always have something
      to talk about... well almost awlays . there are a lot of guys
      out there who have never changed oil. go figure.
      If you were in Seattle I would gladly let you work on the S-70.. what a PITA!
      give me a 200 series anytime to work on.
      --
      home page - http://www.geocities.com/vw_bus_74/index.html








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Air Pump Rely Problem??

      posted by  someone claiming to be Chrissij on  Sun Apr 25 17:45 CST 2004 [RELATED]

      Now that I've PMS'd, AS IS MY RIGHT, yes, the problem is most likely the relay; they are in a vulnerable area. If I remember correctly,it gets it's signal from the ignition switch so that when you start your car, air starts flowing into the exhaust system. Again, if I remember correctly, it then gets it's info from the 02 sensor (but I honestly don't remember how), so that any time you are at a lower rpm, or as it is needed, the air pump sends another shot of air into the system. Basically, it makes your car a "green" car. In theory, rather than putting out carbon monoxide, it puts out carbon dioxide...which the trees love.








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Air Pump Rely Problem??

        posted by  WatsonMD on  Mon Apr 26 05:56 CST 2004
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

        Didn't mean to ruffle the feathers Chrissi. I just wanted to check and see if there was a sensor "upstream" of the airpump relay that might be causing the problem. Thanks for the info about replacing the pump and what it does. I've ordered one from FCP Groton this AM. Hopefully, the car will be back to normal on Wed/Thurs. Thanks again.

        Andrew








        •   REPLY TO THIS MESSAGE    PRINT   SAVE 

          Air Pump Rely Problem??

          posted by  someone claiming to be Chrissij on  Mon Apr 26 06:14 CST 2004 [RELATED]

          Sniffle; I just felt ignored. When I first started working on cars I got the "female mechanic" thing for a bit...and haven't had that in a really long time...








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

    Air Pump Rely Problem??

    posted by  porkface on  Sun Apr 25 12:02 CST 2004
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 09:12 CST 2014
    [RELATED]

    i don't have a wiring diagram, i'm guessing-dangerous.

    if it's a 4 or 5 pin relay, you will see numbers on it, 30, 85, 86 and 87/87a. constant power, maybe key off, probably key on is on 30.

    87 should be to the pump

    85 might be power or ground from a switch-or ecu.

    86 is the opposite of 85. if 85 is 12v, 86 is ground, etc.

    next time it does it, pull the relay out enough to expose the terminals but not enough to unplug it. poke all the terminals with a test light. if the pump is off and the key is on, only 30 should be hot. if the pump is on with the key off, only 30 and 87 will be hot, because the relay is stuck closed. if, by chance 85 or 86 is also hot-OR-this is why guessing is dangerous-if the relay always has power on 2 terminals and relies on a ground to close the relay, then that needs to be looked at as the problem when the key is off. good luck, chuck.







<< < > >>



©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.