Wizard
SupporterI have a Discovery II and seeing as I’m replacing ALL the Td5s cooling system components, whilst also repairing / rewrapping the engine loom, and while I’m at it, tidying the accessory wiring..... all of which led me to wonder about relocating the Engine Saver electrical probe to the coolant reservoir instead of reinstalling back into the top hose bleed port. I’m not timid about drilling a hole for an electrical termination in a perfectly good coolant tank but how best to affect that termination without compromising the tank and its function. Possible solutions range from the simple self taping screw plus a ring terminal thru to pop rivets and rivnuts and onto a stainless steel screw bolt & nut with flat washers plus a spade connector lug, and each option with or without sealant. Someone has done this before - what are the pitfalls if any?
LROCV member #131
1999 build D2 TD5 Auto, Mantec snorkel, 2" LRA spring lift, ARB on board air, Ashcroft ATB, CMM air ram CDL shifter, swag & gold pans ....
AT RESTHi Rob, can you possibly feed the probe into the expansion tank via one of the hose out let and refit the hose back over the wire and clamp the hose? this is how the probes were fitted on the old Davis Craig electric fan sensors back in the 70s. might work on a temp sensor
Regards, Mario
Wizard
SupporterG’day Mario, o’yes I remember them, I installed a few back in the days for family and matesOriginally Posted by Roverlord off road spares
LROCV member #131
1999 build D2 TD5 Auto, Mantec snorkel, 2" LRA spring lift, ARB on board air, Ashcroft ATB, CMM air ram CDL shifter, swag & gold pans ....
Master
SupporterIf the alarm is for low water level in the engine, the probe will need to be in the engine or radiator. If the probe is only for low coolant bottle level them put it in the bottle.
If there is any sort of vacuum leak between the coolant bottel and the engine the bottle may stay full and the engine empty
Ian
Bittern
OldBushie
SupporterThe low coolant alarm HAS to be fitted in the expansion tank, fitting it to the engine is pointless because by the time the alarm goes off the engine will be "Toast".
Fitting the alarm in the expansion tank will give you those vital extra seconds (even in a burst radiator hose event) to shut the engine down BEFORE it runs out of coolant and self destructs
You only get one shot at life, Aim well
2004 D2 "S" V8 auto, with a few Mods gone
2007 79 Series Landcruiser V8 Ute, With a few Mods.
4.6m Quintrex boat
20' Jayco Expanda caravan gone
Wizard
SupporterWhen I settle on how to do it right, without leaks or compromising the tank (any suggestions anyone..?) I expect that the relocated Engine Saver probe should work in the coolant tank just the same as when it was in the top radiator hose AND if that fails i have a side entry float switch on the way from QLD.
LROCV member #131
1999 build D2 TD5 Auto, Mantec snorkel, 2" LRA spring lift, ARB on board air, Ashcroft ATB, CMM air ram CDL shifter, swag & gold pans ....
Master
SupporterI still cant follow your logic ....The low coolant alarm HAS to be fitted in the expansion tank, fitting it to the engine is pointless because by the time the alarm goes off the engine will be "Toast".
Fitting the alarm in the expansion tank will give you those vital extra seconds (even in a burst radiator hose event) to shut the engine down BEFORE it runs out of coolant and self destructs
i have one of the engine alerts that works on metal temperature. and is attached to a bot on the cylinder head. It work regardless of water level and works well.
It has an adjustable alarm temp and the alarm stays on until the metal cools down.
Ian
Bittern
OldBushie
SupporterThe "Engine Saver" is a low coolant alarm and it activates when the coolant level drops and it looses its connectivity through the coolant it is NOT heat activated and placing it where the coolant level drops first (expansion tank) gives you more time to react.
Can you follow my logic now?
You only get one shot at life, Aim well
2004 D2 "S" V8 auto, with a few Mods gone
2007 79 Series Landcruiser V8 Ute, With a few Mods.
4.6m Quintrex boat
20' Jayco Expanda caravan gone
Master
Good logic.
So this: even though the Enginesaver sensor for the TD5 replaces the top hose bleeder screw the sensor should be modified to instead be fitted to the expansion tank. Right?
OldBushie
SupporterBy the time the alarm goes off when fitted to the bleeder screw the engine is most likely toast already because the engine will be pretty much empty of coolant at that stage and by the time you have pulled over and shut the engine down the temp would have gone through the roof.
When the sensor is fitted to the expansion tank there is Still some coolant in the tank as a reserve so when the alarm goes off and this will allow those precious seconds to be able to pull over and shut the engine down thus avoiding a disaster.
Think of it like the low fuel light on you dash, Not much point in that light coming on when the tank is completely empty.
It comes on when the fuel is getting seriously low But there is still some fuel in the tank which enables you to fuel up and get out of trouble.
The engine saver fitted to the expansion tank will also give you a warning that there is a problem and gives you time to to sort it out, IF it is fitted to the bleeder screw hole all it will do it tell you that you have pretty much stuffed your engine because you have bugger all coolant left in it.
You only get one shot at life, Aim well
2004 D2 "S" V8 auto, with a few Mods gone
2007 79 Series Landcruiser V8 Ute, With a few Mods.
4.6m Quintrex boat
20' Jayco Expanda caravan gone
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