Manual fan switch - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

drz400dude · 01-06-2018, 08:01 PM

Is there any way to wire up a switch for the fan? My coolant doesn't get hot, but my oil heats up going around town. I have an oil cooler, so I was wondering if there was a way to wire it to a switch and turn it on manually to draw air across the oil cooler when the fan wouldn't normally be on. Ideally, it would be a 2 position switch, on and auto(normal operation).

Any ideas?

Sent from my SAMSUNG-SM-N920A using Tapatalk

Northern_18 · 01-06-2018, 10:17 PM

What oil temperatures are you seeing? I don't think you'd see any dangerous oil temps if the coolant isn't triggering the rad fan to start especially if you have an oil cooler.

However, if you have a OFT you could change the values for the temperature that the fan will turn on at.

If you turn on the AC it would also turn on the 2nd rad fan to get air through the condenser.

humfrz · 01-06-2018, 10:18 PM

Quote:

Originally Posted by drz400dude

Is there any way to wire up a switch for the fan? My coolant doesn't get hot, but my oil heats up going around town. I have an oil cooler, so I was wondering if there was a way to wire it to a switch and turn it on manually to draw air across the oil cooler when the fan wouldn't normally be on. Ideally, it would be a 2 position switch, on and auto(normal operation).

Any ideas?

Sent from my SAMSUNG-SM-N920A using Tapatalk

I'll betcha ol @Ultramaroon has some ideas ....... I'll summon him .....

Just how "hot" does your oil get ...... driving around town .....??

humfrz

Ultramaroon · 01-06-2018, 10:47 PM

I turn on my AC and if it's cold out, adjust my heat accordingly.

Works great as long as the oil cooler is mounted in the path of side of the running fan. IIRC when the AC compressor is engaged, only one fan is triggered.

edit: Yeah, what @Northern_18 said.

Mr.ac · 01-07-2018, 01:59 AM

You can, simple relay, wires and a switch.

But..... just what makes you think your oil gets way too hot in normal driving around town?

I and countless other owners that don't have an oil cooler have never had any high oil temp problems. (Unless your at the track pushing it hard, on a hot summer day.)

drz400dude · 01-14-2018, 12:59 PM

Quote:

Originally Posted by Northern_18

What oil temperatures are you seeing? I don't think you'd see any dangerous oil temps if the coolant isn't triggering the rad fan to start especially if you have an oil cooler.

However, if you have a OFT you could change the values for the temperature that the fan will turn on at.

If you turn on the AC it would also turn on the 2nd rad fan to get air through the condenser.

In the summer when it is 110 out they are creeping close to 230...240F. I have a turbo, probably should have mentioned that in the first place. Under the hood gets super hot. I just wanted fresh air circulating when going around town. I didn't know the AC turned on the fan, makes sense. Maybe that will be enough to draw air across the oil cooler. Thanks!

Lunatic · 01-14-2018, 02:02 PM

The 1st fan comes on at 200 degrees water temp, the 2nd fan comes on when your turn on the AC.
I had the same problem living near Palm Springs. I mounted my oil cooler outboard behind where the running lights had been. No it gets it's own cool air and less restriction for air going through the intercooler and radiator. I also put a small fan on the oil cooler with a switch. Works really great for slow city driving.

endless_pain · 01-15-2018, 11:54 AM

Plug and play, Beastronix 86Nanny will do this.

01-06-2018, 10:47 PM	#4
Ultramaroon chicken tonight Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,951 Thanks: 52,306 Thanked 36,619 Times in 18,982 Posts Mentioned: 1109 Post(s) Tagged: 9 Thread(s)	I turn on my AC and if it's cold out, adjust my heat accordingly. Works great as long as the oil cooler is mounted in the path of side of the running fan. IIRC when the AC compressor is engaged, only one fan is triggered. edit: Yeah, what @Northern_18 said. __________________ service manuals

01-07-2018, 01:59 AM	#5
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,369 Thanks: 709 Thanked 1,558 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	You can, simple relay, wires and a switch. But..... just what makes you think your oil gets way too hot in normal driving around town? I and countless other owners that don't have an oil cooler have never had any high oil temp problems. (Unless your at the track pushing it hard, on a hot summer day.) __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

01-14-2018, 02:02 PM	#7
Lunatic Senior Member Join Date: Jan 2014 Drives: 2015 Raven FRS Location: Indio, CA. Just an Old Fart in a Automatic!. Posts: 1,614 Thanks: 7 Thanked 1,056 Times in 488 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	The 1st fan comes on at 200 degrees water temp, the 2nd fan comes on when your turn on the AC. I had the same problem living near Palm Springs. I mounted my oil cooler outboard behind where the running lights had been. No it gets it's own cool air and less restriction for air going through the intercooler and radiator. I also put a small fan on the oil cooler with a switch. Works really great for slow city driving. Attached Images

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Switch my auto for a manual or an s2000 or similar car	orangespark	Other Vehicles & General Automotive Discussions	21	05-24-2016 12:41 PM
FS: Unichip, USB cable, 2 tune selector switch, Clutch switch	BII302	Engine, Exhaust, Bolt-Ons	6	04-13-2015 07:06 PM
Black door handles and shift bezel switch ( manual trans )	RacerDrews	Interior Parts (Incl. Lighting)	5	06-14-2014 10:10 AM
Keep Auto Transmission or Switch to Manual	Stayreal	Engine, Exhaust, Transmission	41	03-23-2014 10:02 AM
How to replace turn signals with switch backs and its relay switch.	Scionshaun	Scion FR-S / Toyota 86 GT86 General Forum	1	05-30-2013 11:42 PM

01-06-2018, 10:17 PM	#2
Northern_18 Member Join Date: Aug 2014 Drives: Silver 2016 Scion FR-S Location: Ottawa, ON, Canada Posts: 33 Thanks: 7 Thanked 15 Times in 9 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	What oil temperatures are you seeing? I don't think you'd see any dangerous oil temps if the coolant isn't triggering the rad fan to start especially if you have an oil cooler. However, if you have a OFT you could change the values for the temperature that the fan will turn on at. If you turn on the AC it would also turn on the 2nd rad fan to get air through the condenser.

01-15-2018, 11:54 AM	#8
endless_pain Pissin off regressives Join Date: Feb 2014 Drives: They have engines. Location: Socialist Republic of Maryland Posts: 230 Thanks: 237 Thanked 119 Times in 67 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Plug and play, Beastronix 86Nanny will do this.

User Name		Remember Me?
Password