Low Engine Coolant Light

Discussion in 'General Motoring' started by jmthomp1, Oct 28, 2004.

  1. jmthomp1

    jmthomp1 Guest

    I have a 99SL2 that has recently started having the Low Coolant/Auto
    Transaxle Fluid Temp warning light flash for the first few minutes of
    operation after starting. Just does it now and then and stops after about
    half a mile. The coolant level is normal. Do you think the sensor is going
    bad ?
    jmthomp1, Oct 28, 2004
  2. jmthomp1

    Jigger Guest

    I just started having the same problem with a 94SL1... The resevoir seems
    full, but the hoses seem quite soft.. Now I'm no mechanic, and I don't get
    how I am supposed to add fluid to the rad when there is no rad cap!! Any
    ideas?? What am I missing?? Thanks, M.
    Jigger, Nov 14, 2004
  3. jmthomp1

    Roy Guest

    You fill the resevoir to the max line.
    Roy, Nov 14, 2004
  4. jmthomp1

    Napalm Heart Guest

    The reservoir is the plastic tank that has the words engine coolant
    only on the cap. There are levels marked on the side of the tank.

    Napalm Heart, Nov 14, 2004
  5. jmthomp1

    Terry Guest

    I've had a similar problem with my 2000 Saturn wagon, the 'fill resevoir'
    has been on, I took it to a garage, they tested it, said the coolant was
    full, must be
    a defective warning light. This car only has 40K on it, but I suppose
    anything is possible.
    I've noticed some coolant on the garage floor, though the overflow resevoir
    stays full-- what else could be going on?


    Terry M.

    2000 Saturn L-Series Wagon (wife)
    1968 Chevy Camaro 383 stroker (me)
    1998 Chevy Malibu (daughter
    Terry, Nov 14, 2004
  6. jmthomp1

    Blah blah Guest

    I'm not sure how pressurized overflow bottles on S series Saturns work
    and I forget off hand what the L series uses. Typically what happens is
    when the engine is warm fluids are pushed into the bottle past the
    radiator cap. As the engine cools it draws the fluids past the radiator
    cap and back into the engine. If there is a leak, often its easier for
    the engine push fluids through the leak and suck air in through the leak
    because its less restrictive and easier to go through the leak than
    through the radiator cap. This is where a lot of people run into
    trouble. They never de-cap their radiator to notice its low because the
    overflow bottle is always full.
    Blah blah, Nov 14, 2004
  7. jmthomp1

    Jigger Guest

    The biggest problem I have is... there is no rad cap, so all I have to go on
    is the overflow jug... If the car is not pulling fluid out of the jug, how
    do I know..

    Also, if this is the only way to fill the car with coolant, it must take
    hours to change the engine coolant... M.
    Jigger, Nov 14, 2004
  8. jmthomp1

    BANDIT2941 Guest

    If there is a leak, often its easier for
    Yeah - and an air pocket is very bad news - a quick way to melt stuff.
    BANDIT2941, Nov 15, 2004
  9. jmthomp1

    Terry Guest

    I just ahad a look at the radiator, there's no cap, no way to visibly
    the radiator--

    Terry M.

    2000 Saturn L-Series Wagon (wife)
    Terry, Nov 15, 2004
  10. jmthomp1

    Blah blah Guest

    The bottle is the top of your radiator (should have a hose going to
    your radiator or to a high point in the system). The highest point of
    your cooling system is where all the air will go. Sometimes they add
    bleed screws at other high points to help purge air out if the air cant
    make it to the bottle.
    Blah blah, Nov 15, 2004
  11. jmthomp1

    Terry Guest

    Yeah that's what I had always assumed...someone on this ng though
    said their Saturn had a radiator cap.
    The past couple days I've had more radiator fluid on my garage floor,
    I think I'm going to have to crawl under the car & see where it's coming
    Terry, Nov 15, 2004
  12. ....my 97 used to throw up from the reservoir after I shut the car off. I
    was thinking the worst and it was just a bad reservoir cap that needed
    Jonnie Santos, Nov 16, 2004
  13. jmthomp1

    Napalm Heart Guest

    No radiator cap on the '96 SL2 here, yes on the reservoir cap.

    Napalm Heart, Nov 16, 2004
  14. jmthomp1

    Terry Guest

    Geez let's hope my wife's saturn isn't throwing, up could be a symptom
    of something serious! There's no 'saturn doctor' in my area either...I
    might have to
    do some home 'surgery.'

    Thanks for the suggestion, I'll watch for overflow at the res. cap.

    Terry, Nov 16, 2004
  15. jmthomp1

    Tj Guest

    Check the gasket on raditor cap and on over fill. If the gasket leaks, it
    might be running out the cap before it goes to over flow.
    Tj, Nov 20, 2004
  16. jmthomp1

    Hobbygirl Guest

    I have the same problem with my lights, but there is no fluid leaking. Will
    flushing the radiator help?
    Hobbygirl, Sep 19, 2005
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