roamingyak Posted August 8, 2018 Share Posted August 8, 2018 Wondering if anybody has something like this installed? Or knows of some different options around this?Roaming the Outback Engine Saver Coolant Alarm review (Link is a short youtube review and installation guide) Quote Link to comment Share on other sites More sharing options...
western Posted August 8, 2018 Share Posted August 8, 2018 look in our tech archive index, there is a link to low coolant level warnings, in the Electrcal section. here's the links http://forum.difflock.com/viewtopic.php?t=10972 Quote Link to comment Share on other sites More sharing options...
Puffernutter Posted August 8, 2018 Share Posted August 8, 2018 (edited) I knackered a 300Tdi by cooking it after losing the coolant. With the next engine I fitted a Range Rover header tank that had a sensor on it and a simple circuit that flashed a light and sounded an alarm when the level dropped. Here's what I did from another poster - Cheers Peter Edited August 8, 2018 by Puffernutter Quote Link to comment Share on other sites More sharing options...
roamingyak Posted August 8, 2018 Author Share Posted August 8, 2018 Thanks, had a skim read of all of the links. The solution in the video looks more elegant - not keen to drill a hole in the expansion tank (where coolant could leak out! ) and prefer a tried and tested solution from many installs etc What age/model of Range Rover are we talking about for the header tank you used please? Quote Link to comment Share on other sites More sharing options...
Puffernutter Posted August 8, 2018 Share Posted August 8, 2018 (edited) Re-reading what I did - it's just the cap you need. I think the reference is in the link I put in my edited message. RR float switch header tank cap coolant level sensor PRC7925 The trouble is the sensor in the cap is electronic so you need some sort of driver to operate a relay that then drives a light/alarm. This was the original install from the guy that made the electronics box - http://forum.difflock.com/viewtopic.php?t=10972 Cheers Peter Edited August 8, 2018 by Puffernutter Quote Link to comment Share on other sites More sharing options...
garrycol Posted August 9, 2018 Share Posted August 9, 2018 Yes I have one on my RV8 - the low coolant sensor goes into the top radiator hose and the temp sensor bolts to a bolt in the head. Works very well sounding if the coolant is a bit low and if the engine starts to get a bit warm. I have the temp alarm set 10c above the normal operating temp of the engine. I measures actual engine metal temp not coolant temp which can give a false reading - most cars have an OEM coolant temp gauge anyway. Garry Quote Link to comment Share on other sites More sharing options...
miketomcat Posted August 9, 2018 Share Posted August 9, 2018 TSD has a low coolant alarm on his ibex using if I remember correctly a range rover classic header tank and factory coolant alarm cap. I have got a cap to do the mod on mine at some point. Cap link: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F222458494904 Mike Quote Link to comment Share on other sites More sharing options...
western Posted August 9, 2018 Share Posted August 9, 2018 The RRC sensor cap is what I've used along with the little black box from Tim in my earlier link so it operates correctly, on my td5 warning light panel I have the black box green led for OK & wired the fail into the unused water in fuel warning light.all the info in my links above. Quote Link to comment Share on other sites More sharing options...
TSD Posted August 9, 2018 Share Posted August 9, 2018 As far as I can tell... If you have a gen parts RRC cap you will probably need some simple electronics to drive the warning light. If you use an aftermarket one you can probably use a small relay to do the job. Quote Link to comment Share on other sites More sharing options...
Roverdrive Posted August 9, 2018 Share Posted August 9, 2018 I can confirm that an aftermarket one will operate a standard relay. Been in for a couple of years now, and works fine. It gets tested every time I check the oil, just to be on the safe side! Quote Link to comment Share on other sites More sharing options...
mmgemini Posted August 9, 2018 Share Posted August 9, 2018 All on Difflock. Read the other links as well http://forum.difflock.com/viewtopic.php?t=10972&highlite=300tdi+coolant=level+switch Quote Link to comment Share on other sites More sharing options...
western Posted August 18, 2018 Share Posted August 18, 2018 found these on ebay earlier -- Land Rover Defender, Low Coolant Alarm, inc. Pressure Cap Part No. PRC7925 https://www.ebay.co.uk/itm/Land-Rover-Defender-Low-Coolant-Alarm-inc-Pressure-Cap-Part-No-PRC7925/173477561583?hash=item28641184ef:g:PJYAAOSwIMtbZFrG Quote Link to comment Share on other sites More sharing options...
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