Results 1 to 5 of 5

Thread: Bleeding coolant and check engine light...

  1. #1
    Join Date
    May 2006
    Location
    Hawaii
    Posts
    129

    Default Bleeding coolant and check engine light...

    I'm bleeding my coolany system and when I close the bleed screw on the thermostat, my check engine light is coming on (solid). When I open the bleed screw, it goes off.

    My temperature needle is closer to the cold blue than the middle which is also kind of weird since about 10 minutes before that, it was 3/4 of the way to Red.

    Curious about the check engine light and is my thermostat going?


    Friends Don't Let Friends Drive Stock

  2. #2
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,821

    Default

    not sure about the light and the bleed screw, you most likely have an air pocket in there. Search on the bleeding procedures as sometimes it's quite difficult to get it bled and working correctly.

    http://www.bimmernut.com/forum/searc...earchid=502784
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  3. #3
    Join Date
    May 2006
    Location
    Hawaii
    Posts
    129

    Default Plug floating in expansion tank?!?*(&

    Quote Originally Posted by HIe34 View Post
    I'm bleeding my coolany system and when I close the bleed screw on the thermostat, my check engine light is coming on (solid). When I open the bleed screw, it goes off.

    My temperature needle is closer to the cold blue than the middle which is also kind of weird since about 10 minutes before that, it was 3/4 of the way to Red.

    Curious about the check engine light and is my thermostat going?
    So yes this bleeding thing has been absolutely a blast..but I digress, went to add more coolant and there is a yellow/orangish plug floating in it. I'm assuming this plug goes at the bottom of the expansion tank and pressure blasted it out, can this plug be plugged back in or am I looking at a new one? Is that sold separate (i can't tell on realoem) or do I need a new expansion tank.

    My problem now is that since that is dislodged, there is no pressure in the expansion tank and so when the coolant starts boiling it is pouring out of the expansion tank.

    Any advice is appreciated.


    Friends Don't Let Friends Drive Stock

  4. #4
    Join Date
    May 2006
    Location
    Hawaii
    Posts
    129

    Default think i got it..

    Quote Originally Posted by HIe34 View Post
    So yes this bleeding thing has been absolutely a blast..but I digress, went to add more coolant and there is a yellow/orangish plug floating in it. I'm assuming this plug goes at the bottom of the expansion tank and pressure blasted it out, can this plug be plugged back in or am I looking at a new one? Is that sold separate (i can't tell on realoem) or do I need a new expansion tank.

    My problem now is that since that is dislodged, there is no pressure in the expansion tank and so when the coolant starts boiling it is pouring out of the expansion tank.

    Any advice is appreciated.
    floaty thing: part of coolant level sensor

    no pressure: bleed screw stripped.

    more work ahead.


    Friends Don't Let Friends Drive Stock

  5. #5
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,821

    Default

    I think your car in your signature needs the door gaps adjusted.

    Glad you figured something out with it!
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

Similar Threads

  1. check engine light-???
    By Russell in forum 5 Series BMW
    Replies: 10
    Last Post: 01-31-2009, 01:00 PM
  2. coolant bleeding m60 engine
    By lvdxd00 in forum 5 Series BMW
    Replies: 7
    Last Post: 10-25-2008, 11:08 AM
  3. check engine light flickers with engine miss
    By cobb535 in forum 5 Series BMW
    Replies: 6
    Last Post: 05-25-2007, 11:21 AM
  4. Another Check Engine Light
    By Spasso in forum 3 Series BMW
    Replies: 1
    Last Post: 01-01-2007, 05:34 PM
  5. Coolant Temp / Check Engine M50
    By Russ in Seattle in forum 5 Series BMW
    Replies: 1
    Last Post: 03-17-2004, 10:45 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •