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Can the water temp. gauge be rewired to read oil? #592892
01/09/19 09:28 AM
01/09/19 09:28 AM
Joined: Oct 2011
Posts: 3,325
Somerset, UK
P
PaulJ Offline OP
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PaulJ  Offline OP
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Joined: Oct 2011
Posts: 3,325
Somerset, UK
On mine and other Plus 4's the water temperature gauge is supplement by a digital readout in the speedo. and it seems to be a waste of instruments for there to be two readouts of the same thing, so, how about using a suitable sender in the sump and rewiring the original water temp. gauge to read oil temperature?

The only problem is how. At first I thought it was simply a matter of pulling off the plug in the water rail and diverting it to an oil sender, but the ECU didn't like that one bit, has anyone else done this or even thought about it, if so, how to do it?


Paul
[Beginning to get the best out of the ARP4]
Re: Can the water temp. gauge be rewired to read oil? [Re: PaulJ] #592897
01/09/19 09:36 AM
01/09/19 09:36 AM
Joined: Jul 2014
Posts: 486
Cornwall
griffo Offline
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Cornwall
You might be better off with an oil pressure gauge. I just inserted a Stack instrument in the dash of my 2014 Plus 4 with a power feed from the back of the accessory plug and a sensor above the oil filter.

Re: Can the water temp. gauge be rewired to read oil? [Re: PaulJ] #592949
01/09/19 05:21 PM
01/09/19 05:21 PM
Joined: Feb 2016
Posts: 1,993
East Harling, Norfolk UK
Richard Wood Offline
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Richard Wood  Offline
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Joined: Feb 2016
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East Harling, Norfolk UK
I think it very unlikely the sensors for coolant temp and oil pressure have the same resistivity range. Add to that ECU compatibility and it's nearly certain an impossibility. Even swapping like for like ECU controlled devices you often have to re-register them before the replacement is accepted.


Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom
Re: Can the water temp. gauge be rewired to read oil? [Re: PaulJ] #593064
02/09/19 03:20 PM
02/09/19 03:20 PM
Joined: Oct 2011
Posts: 3,325
Somerset, UK
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PaulJ Offline OP
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PaulJ  Offline OP
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Joined: Oct 2011
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Somerset, UK
Thanks for the replies Peter and Richard. They were my feelings too, but I thought I would ask in case anyone had managed to sort it out.


Paul
[Beginning to get the best out of the ARP4]
Re: Can the water temp. gauge be rewired to read oil? [Re: PaulJ] #593447
04/09/19 09:18 AM
04/09/19 09:18 AM
Joined: May 2015
Posts: 220
north yorkshire
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Lowflyer Offline
L - Learner Plates On
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Joined: May 2015
Posts: 220
north yorkshire
I installed an oil pressure gauge on my Plus 4, got caerbont to make me a 50mm gauge with oil symbol instead of water, they did it within a couple of weeks can't remember the price, not expensive and it matches the rest of the instrumentation. It does utilise the same resistance value transmitter, obviously oil and water temps are not too dissimilar. On my Plus 4 i cut a hole in the dash to the right of the steering wheel. I installed 2 transmitters, one in the Raceline alloy sump and one in the oil filter outlet, i use the sump temp normally, oil runs at around 90C. Its a nice addition. By the way i have standard Smiths (Caerbont now) instrumentation including thier transmitters, if you've got Stack you need to verify input range, can't see it being anything too special as I've got it on my elise and exige and over the years have replaced one of the transmitters with one sourced from Eliseparts.

Re: Can the water temp. gauge be rewired to read oil? [Re: PaulJ] #593599
05/09/19 07:34 AM
05/09/19 07:34 AM
Joined: May 2015
Posts: 220
north yorkshire
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Lowflyer Offline
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Lowflyer  Offline
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Joined: May 2015
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north yorkshire
Oops sorry guys.......i'm not safe out of the home!...... i meant to say i installed an Oil Temperature gauge.
Apologies


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