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Thread: "Engine Saver" sensor choice

  1. 12th April 2012, 11:22 AM #1
    Wasa57
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    "Engine Saver" sensor choice

    To those who have installed engine savers on td5's, did you choose one with a coolant or metal (engine temp) sensor, and why?
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  2. 12th April 2012, 11:26 AM #2
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    alpick
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    not exactly your question but,

    I chose the TM2 combo unit that does eng temp and coolant level
    Coolant level sensor replaces the bleed screw on the top radiator hose and,

    engine cyl head temp sensor attaches to head at LH rear.

    find one of these if you can, they are excellent.

    cheers
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  3. 13th April 2012, 10:19 PM #3
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    What he said...

    Great addition.
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  4. 13th April 2012, 10:38 PM #4
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    Slunnie
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    I've got the coolant level sensor (Redarc) and the sensors are in the coolant bottle - thats where the coolant level drops first.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~
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  5. 14th April 2012, 10:27 AM #5
    Wasa57
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    Quote Originally Posted by Slunnie View Post
    I've got the coolant level sensor (Redarc) and the sensors are in the coolant bottle - thats where the coolant level drops first.
    That makes sense. How far below the cold level did you plumb your sensor to negate splashing false alarms?
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  6. 14th April 2012, 12:00 PM #6
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    I used the Coolant version of the Enginesaver. Being that it's installed at the highest point in the cooling system, and air rises to the highest point in a sealed system, it just made good sense to go that way .... and no drilling the coolant tank. Just screw it into the top hose bleed point, mount the LED in a blank switch panel above the coin tray.

    The instant air enters the cooling system it alarms ... long before the engine has lost coolant. It's a no brainer for the wife ... if it squeels, STOP !!!

    Kev..

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  7. 16th April 2012, 08:38 PM #7
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    Like Fluids I use the coolant version. It worked for real at Blinman not long after installation, a pin hole in the top hose.

    Cheers
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  8. 16th April 2012, 09:15 PM #8
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    Quote Originally Posted by Wasa57 View Post
    That makes sense. How far below the cold level did you plumb your sensor to negate splashing false alarms?
    The sensors (if you could call them that!) are down fairly low on the bottle, so the coolant level needs to drop a fair bit to trigger it. The screws are on the side though, not the bottom.

    The reason for the sensors being in the bottle and not at the top of the coolant hose is because the bottle is where the coolant level drops first. When the system is operating any air which is in the coolant system is purged out fairly quickly - this is quite deliberate in the design of the cooling system. The air wont remain at the bleed point due to the circulation. The air collects in the top of the radiator tank where flow is probably the slowest and from there is a small pipe which runs back to the coolant bottle and has a constant small stream of coolant flowing through it, this also purges air out of the systems. The coolant returns into the cooling system via the lower hose where the air cant drop down to. This is why the coolant bottle is the first place where the coolant is lost from. The exception will be if the motor has not been run and air has somehow gotten into the system, but if that happens it shows up very quickly in the bottle anyway.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~
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