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  • 2 Post By basscatt
Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, I hate.... in Past Cadillac Vehicle Discussion; ...this car! "low coolant" message again..... I think it is time to enter the thing in the demolition derby!...
  1. #1
    Slipgate is offline Cadillac Owners Enthusiast
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    I hate....

    ...this car! "low coolant" message again..... I think it is time to enter the thing in the demolition derby!


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  3. #2
    basscatt's Avatar
    basscatt is offline Cadillac Owners 10000+ Posts
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    Re: I hate....

    Quote Originally Posted by Slipgate View Post
    ...this car! "low coolant" message again..... I think it is time to enter the thing in the demolition derby!
    ----------------------------
    I think it is time to enter the thing in the demolition derby!
    she is going to HEAR you -

    - HOPEFULLY - she didn't - and it's not too late -
    here is what you need to do - IMMEDIATELY -

    FACE NORTH - and BOW - - to the NORTHSTAR GODS - 3 TIMES -

    Open the car's hood - and stroke the beauty cover - -

    while repeating - 3 times -



    immediately after this ceremony - do a cooling system pressure test -

    IF the NORTHSTAR GODS accept your apology -

    you will see the easy to repair leak -

    if you do - repeat - 3 times -

    and fix the leak -

    if NOT -
    mc_marto and Mojo88 like this.

  4. #3
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: I hate....

    Careful - even if you are 4 Manhattans over the top ...........

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  6. #4
    c_d
    c_d is offline Cadillac Owners Fanatic
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    Re: I hate....

    Who? Bass or Slip?

  7. #5
    Slknyk is offline Cadillac Owners Member
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    Re: I hate....

    LOL at Sub; I was thinking the same thing!

    Basscat deserves the "Best Use of Emoticons in a post EVER Oscar". Awesome!

  8. #6
    Slipgate is offline Cadillac Owners Enthusiast
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    Re: I hate....

    lol - awesome! I'll try that tonight for sure.

    The cooling system will maintain pressure overnight. I park it at 4:30pm and the next morning it will still have decent pressure in the system. Just tired of chasing leaks. I put about 1/2 gallon in it last night. First time I had to add anything since the radiator was replaced a few weeks ago.

  9. #7
    DSNCB919 is offline Cadillac Owners Enthusiast
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    When this happened to me I had to get new water pump, thermostat, coolant resivor cap

  10. #8
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: I hate....

    Quote Originally Posted by Slknyk View Post
    LOL at Sub; I was thinking the same thing!

    Basscat deserves the "Best Use of Emoticons in a post EVER Oscar". Awesome!
    Nothing to do with basscatt - there was some prior salty language edited out that few people saw ...............

  11. #9
    c_d
    c_d is offline Cadillac Owners Fanatic
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    Re: I hate....

    Quote Originally Posted by DSNCB919 View Post
    When this happened to me I had to get new water pump, thermostat, coolant resivor cap
    Funny how significant those caps are. How did you determine that you needed a new water pump?

    @Bass: I'd recommend one adjustment to your procedure of pleasing the N* gods. Anyone not named bass, Sub, Ranger or Moist (and some others I surely forgot) cannot open the hood and stroke the beauty cover since due to constant work on the car it's i the trunk. I cannot afford the extra 30 seconds to take it off :-)

    Anyway, this might also be a good place to remind people that the plastic covers (top and bottom) of the radiator and fans are in fact *not* beauty covers but play a role in shaping and directing air flow.

  12. #10
    Mojo88's Avatar
    Mojo88 is offline Cadillac Owners Fanatic
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    Re: I hate....

    Quote Originally Posted by Slipgate View Post
    lol - awesome! I'll try that tonight for sure.

    The cooling system will maintain pressure overnight. I park it at 4:30pm and the next morning it will still have decent pressure in the system. Just tired of chasing leaks. I put about 1/2 gallon in it last night. First time I had to add anything since the radiator was replaced a few weeks ago.

    You need to borrow a good pressure tester to create sufficient pressure for a reliable test. I have a top-of-the-line Stant tester that I bought maybe 30 years ago and it still works like new. You can likely borrow something similar at Autozone (or elsewhere).

    Once you have a good tester in hand, pressurize the system up to limit stated on the cap, which is about 18 psi. Then watch and wait. Keep a flashlight handy. You'll eventually see some dripping, unless it's head gasket, which would leak inside engine........

    "Radiator was replaced a few weeks ago" definitely caught my attention. Could easily be a defective radiator or bad hose connection.

    Good luck

  13. #11
    basscatt's Avatar
    basscatt is offline Cadillac Owners 10000+ Posts
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    Re: I hate....

    Quote Originally Posted by Slipgate View Post
    lol - awesome! I'll try that tonight for sure.

    The cooling system will maintain pressure overnight. I park it at 4:30pm and the next morning it will still have decent pressure in the system. Just tired of chasing leaks. I put about 1/2 gallon in it last night. First time I had to add anything since the radiator was replaced a few weeks ago.
    --------------------------------
    maybe it just took this long to purge all the air from the system -
    after the radiator replacement -

    The cooling system will maintain pressure overnight.
    I park it at 4:30pm and the next morning
    it will still have decent pressure in the system

    if the system maintains pressure overnight - something is wrong -

    the system only builds pressure because the coolant expands as it gets hot -
    when the system cools back down - the coolant contracts -
    and the pressure is gone -
    --------------------

    if your system is still under pressure 12+ hours later -
    and the engine/coolant is cold -
    that pressure is NOT coming from the normal coolant expansion -

    and the ONLY other thing that can pressurize the cooling system -
    is EXHAUST GAS - as in a leaking head gasket -

    sounds like you should do a BLOCK TEST -

  14. #12
    Mojo88's Avatar
    Mojo88 is offline Cadillac Owners Fanatic
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    Re: I hate....

    Quote Originally Posted by basscatt View Post
    --------------------------------
    maybe it just took this long to purge all the air from the system -
    after the radiator replacement - ....

    Yeah, ^^^^^^^^^^ this is quite possibly the answer.

  15. #13
    Slipgate is offline Cadillac Owners Enthusiast
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    Re: I hate....

    Quote Originally Posted by Mojo88 View Post
    Yeah, ^^^^^^^^^^ this is quite possibly the answer.
    This though had crossed my mine. I will keep an eye on the level. And even if the HG was blown, I don't think it would keep pressurizing the system all night.

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