Volvo AWD S40-V40 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 8/2018 S40-V40 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

2003 S40 Turbo - Coolant Fan doesn't shut off S40-V40

posted by  DougW on  Sat Dec 31 12:27 CST 2016
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sat Mar 29 14:15 CST 2014
[RELATED]

This may be related to another recent post, maybe not. I recently had the top hose crack and I replaced it. Now the fan that cools the radiator won't shut off even after the engine is shut down, I have disconnected the battery to stop it.

Ideas? Is it possible not enough coolant is in the radiator after loss of coolant and tripping a sensor?

When the old hose was off, the inlet into the radiator had coolant brimming right at the opening. I filled the expansion tank and I have run the engine for a couple of minutes but no longer.

Any insights appreciated. Be gentle. LOL!

Thanks, Doug








  •   REPLY TO THIS MESSAGE    EDIT   PRINT   SAVE 

    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    If you only ran the engine a few minutes after topping off the coolant, there may be air in the system. You need to run the engine long enough for the thermostat to open and at that time you can squeeze the large hose and 'burp' the air out.

    Rather than disconnecting the battery, you could just disconnect a fuse.
    --
    Keeping it running is better than buying new



    Mark this post as an answer to my question<- Use this feature to mark quality replies to your post.





    •   REPLY TO THIS MESSAGE    EDIT   PRINT   SAVE 

      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

      Thank you, Klaus. I was thinking that, but how do you burp the large hose? That is the top hose and goes to the expansion tank and down to the radiator, is it not?

      I am a big believer in keeping cars for a long time.

      Thanks,

      D



      Mark this post as an answer to my question<- Use this feature to mark quality replies to your post.





      •   REPLY TO THIS MESSAGE    EDIT   PRINT   SAVE 

        posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

        To 'burp' the system, just squeeze the large hose repeatedly. You will see the bubbles come out of the overflow bottle.

        Of course, you may have a failing engine fan module if the fan comes on at engine start and will not turn off.
        --
        Keeping it running is better than buying new



        Mark this post as an answer to my question<- Use this feature to mark quality replies to your post.




<< < > >>



©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.