possible to convert outside temp sensor to water/oil? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

max20s14 · 07-17-2018, 06:26 PM

is it possible to convert outside temp sensor to water/oil?

Ive heard of this being done on other cars before.

weederr33 · 07-17-2018, 06:54 PM

Just get a Bluetooth dongle and the torque app.

toyubie · 07-17-2018, 10:06 PM

I don't see why not. The sensor is mounted in front of the A/C condenser, if you found a voltage compatible sensor for water or oil you could definitely wire it in. AFAIK nobody has done this on our car yet.

Williampreza · 07-17-2018, 10:13 PM

What's the range on the readout for the outside temp gauge? If it doesn't read above 200º (unless you're working in ºC!) it wouldn't be of any use. Also, is the OT sensor used by the engine management system? (I don't know the answer, just brainstorming..)

max20s14 · 07-18-2018, 12:19 AM

Quote:

Originally Posted by Williampreza

What's the range on the readout for the outside temp gauge? If it doesn't read above 200º (unless you're working in ºC!) it wouldn't be of any use. Also, is the OT sensor used by the engine management system? (I don't know the answer, just brainstorming..)

not sure. I guess we could try putting a heat gun to it to see if it goes over 200

Horrid_Funk · 07-18-2018, 12:59 PM

Quote:

Originally Posted by Williampreza

What's the range on the readout for the outside temp gauge? If it doesn't read above 200º (unless you're working in ºC!) it wouldn't be of any use. Also, is the OT sensor used by the engine management system? (I don't know the answer, just brainstorming..)

That shouldn't matter if you're using Torque. As long as you replace it with a sensor that has the same voltage output (assuming it's an analog output) you can put in a custom PID that converts the reading to the sensor's range. The dash wouldn't read the correct temperature then, though, only the app with the custom PID.

As far as if the engine management system uses it, that could be a problem but I highly doubt that it does. It should only care about intake temperature, not outside temperature.

Pointmutation · 07-18-2018, 03:12 PM

Interesting idea. Would definitely make for a stealthy, oem looking temp monitor. An OBD BT dongle + Torque works too but has its own issues like always having to wait for pairing, bad pairing, battery drain depending on BT adapter, etc. Enough issues wasting my time and with the frequency of me using torque just for temp read outs that I switched to manual gauges. OP I hope you try this temp sensor conversion and I hope it works.

Tcoat · 07-18-2018, 04:01 PM

I have no clue if it does anything other than display the temperature on the dash but I would want to make bloody sure it isn't sending a signal to any other system in the car before messing with it.
May be fine on a manual HVAC control but I do know that it plays a part in the automatic HVAC systems.

nico_rsx · 07-18-2018, 04:03 PM

The HVAC probably use that temperature reading to know if it needs to start the AC compressor when you use the windshield defrost vent.

Tcoat · 07-18-2018, 05:05 PM

Quote:

Originally Posted by nico_rsx

The HVAC probably use that temperature reading to know if it needs to start the AC compressor when you use the windshield defrost vent.

Good call!

Ultramaroon · 07-18-2018, 07:14 PM

Quote:

Originally Posted by Tcoat

I have no clue if it does anything other than display the temperature on the dash but I would want to make bloody sure it isn't sending a signal to any other system in the car before messing with it.
May be fine on a manual HVAC control but I do know that it plays a part in the automatic HVAC systems.

How about that!

https://demos.starbase7.net/t3Portal...02LJ403UX.html

Tcoat · 07-18-2018, 08:08 PM

Quote:

Originally Posted by Ultramaroon

How about that!

https://demos.starbase7.net/t3Portal...02LJ403UX.html

Was too lazy to look it up. Would appear that it would probably not work with just any sensor anyway.

Ultramaroon · 07-18-2018, 11:28 PM

Quote:

Originally Posted by Tcoat

Was too lazy to look it up. Would appear that it would probably not work with just any sensor anyway.

I first posted to correct Nico's guess about the defrost mode because the AC kicks in to dehumidify no matter what the temp. Then I did a panic delete when I checked myself.

Was relieved when I saw that you were offline.

churchx · 07-19-2018, 12:45 AM

How about this project to use display place where clock is to show oil/coolant/intake temps, voltage, a/f ratio?

07-17-2018, 06:26 PM	#1
max20s14 Senior Member Join Date: Sep 2016 Drives: 14' Raven M/T - 02' is300 Location: alabama Posts: 161 Thanks: 45 Thanked 28 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	possible to convert outside temp sensor to water/oil? is it possible to convert outside temp sensor to water/oil? Ive heard of this being done on other cars before.

07-17-2018, 06:54 PM	#2
weederr33 Airborne at your service Join Date: Sep 2014 Drives: '17 BRZ Series.Yellow Location: El Paso, Texas Posts: 6,420 Thanks: 4,579 Thanked 5,706 Times in 2,992 Posts Mentioned: 33 Post(s) Tagged: 2 Thread(s)	Just get a Bluetooth dongle and the torque app. __________________ Series.Yellowbird - http://www.ft86club.com/forums/showthread.php?t=122135 MS, CSCS, TSAC-F, CPT

07-18-2018, 03:12 PM	#7
Pointmutation Senior Member Join Date: Sep 2015 Drives: 2016 ZC6 Location: 808 Posts: 236 Thanks: 119 Thanked 155 Times in 92 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	Interesting idea. Would definitely make for a stealthy, oem looking temp monitor. An OBD BT dongle + Torque works too but has its own issues like always having to wait for pairing, bad pairing, battery drain depending on BT adapter, etc. Enough issues wasting my time and with the frequency of me using torque just for temp read outs that I switched to manual gauges. OP I hope you try this temp sensor conversion and I hope it works. __________________ My build thread: Pointmutation's WRB BRZ build

07-18-2018, 04:01 PM	#8
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,841 Thanks: 61,656 Thanked 108,295 Times in 46,456 Posts Mentioned: 2499 Post(s) Tagged: 50 Thread(s)	I have no clue if it does anything other than display the temperature on the dash but I would want to make bloody sure it isn't sending a signal to any other system in the car before messing with it. May be fine on a manual HVAC control but I do know that it plays a part in the automatic HVAC systems. __________________ Racecar spelled backwards is Racecar, because Racecar.

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07-17-2018, 10:06 PM	#3
toyubie Member Join Date: Apr 2016 Drives: none Location: none Posts: 41 Thanks: 4 Thanked 15 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I don't see why not. The sensor is mounted in front of the A/C condenser, if you found a voltage compatible sensor for water or oil you could definitely wire it in. AFAIK nobody has done this on our car yet.

07-17-2018, 10:13 PM	#4
Williampreza Senior Member Join Date: Feb 2017 Drives: 2017 Ice Silver BRZ Limited Location: East TN, USA Posts: 147 Thanks: 235 Thanked 90 Times in 46 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	What's the range on the readout for the outside temp gauge? If it doesn't read above 200º (unless you're working in ºC!) it wouldn't be of any use. Also, is the OT sensor used by the engine management system? (I don't know the answer, just brainstorming..)

07-18-2018, 04:03 PM	#9
nico_rsx Senior Member Join Date: May 2016 Drives: BRZ 2017 Pure Red, MT Location: Quebec, Canada Posts: 309 Thanks: 122 Thanked 121 Times in 83 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	The HVAC probably use that temperature reading to know if it needs to start the AC compressor when you use the windshield defrost vent.

07-19-2018, 12:45 AM	#14
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,334 Thanks: 698 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	How about this project to use display place where clock is to show oil/coolant/intake temps, voltage, a/f ratio?

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