AT overheat safeguard? Tracking the Auto Transmission. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Tye300 · 10-13-2013, 11:31 AM

I've been tracking my car a lot lately and I noticed that if the oil temps get to a certain degree, (around 115-130C) the transmission seems to shift more softly, kind of like you babied the clutch on a manual car.
I always use the M mode, when the car is in a lower temp the converter locks up more forcefully. Also, the tranny will shift by itself when hot when you reach redline, compared to bouncing the limiter when cooler also.
Anybody else using an AT on the track experience this? Is it time for an AT cooler?

Anthony · 10-13-2013, 11:34 AM

Do you already have an oil cooler? If so, which one?

Tye300 · 10-13-2013, 11:43 AM

No oil cooler yet. I'm installing a supercharger hopefully by next month and will install the oil cooler, radiator, and if needed, transmission cooler.

feldy · 10-13-2013, 12:14 PM

I have noticed the softer shifting. But never once experienced the car shifting up by itself in manual mode. Any video?

m.wood0213 · 10-13-2013, 01:31 PM

You need to get an oil cooler even if it isn't your problem. If you're on the track play it safe keep it cool.

Tye300 · 10-13-2013, 11:54 PM

Quote:

Originally Posted by feldy

I have noticed the softer shifting. But never once experienced the car shifting up by itself in manual mode. Any video?

Sorry no video. When my car does it, it shifts softly and shifts by itself when you reach redline.

dem00n · 10-14-2013, 12:13 PM

If i'm correct (And i never am), the auto has a safety feature in M mode that if you go to redline and stay at it for a longer time then need be it'll shift it self so you don't do any damage or go past redline (Which isn't possible really, it'll shift it self).

But i might be wrong.

TOZER · 10-14-2013, 12:32 PM

Quote:

Originally Posted by dem00n

If i'm correct (And i never am), the auto has a safety feature in M mode that if you go to redline and stay at it for a longer time then need be it'll shift it self so you don't do any damage or go past redline (Which isn't possible really, it'll shift it self).

But i might be wrong.

I can vouch that it doesn't happen 5 seconds> At redline, not sure after that

dem00n · 10-14-2013, 01:16 PM

Quote:

Originally Posted by TOZER

I can vouch that it doesn't happen 5 seconds> At redline, not sure after that

Maybe he went past it and didn't notice?

10-13-2013, 11:31 AM	#1
Tye300 Senior Member Join Date: Oct 2012 Drives: Toyota 86 TRD Version AT Location: Manila, Philippines Posts: 883 Thanks: 548 Thanked 599 Times in 283 Posts Mentioned: 20 Post(s) Tagged: 1 Thread(s)	AT overheat safeguard? Tracking the Auto Transmission. I've been tracking my car a lot lately and I noticed that if the oil temps get to a certain degree, (around 115-130C) the transmission seems to shift more softly, kind of like you babied the clutch on a manual car. I always use the M mode, when the car is in a lower temp the converter locks up more forcefully. Also, the tranny will shift by itself when hot when you reach redline, compared to bouncing the limiter when cooler also. Anybody else using an AT on the track experience this? Is it time for an AT cooler?

10-13-2013, 11:34 AM	#2
Anthony Weight Nazi Join Date: Aug 2012 Drives: 13 FRS -399lb, 11 335is, 05 Tiburon Location: Biloxi, MS / Gulf Coast 86 Posts: 3,702 Thanks: 5,009 Thanked 3,713 Times in 1,765 Posts Mentioned: 150 Post(s) Tagged: 4 Thread(s)	Do you already have an oil cooler? If so, which one? __________________ Build Thread \| The Venus Project \| Any car which holds together for a whole race is too heavy.

10-13-2013, 12:14 PM	#4
feldy Senior Member Join Date: Aug 2011 Drives: 2013 FRS Asphalt Location: SF Bay Area Posts: 1,155 Thanks: 309 Thanked 335 Times in 212 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	I have noticed the softer shifting. But never once experienced the car shifting up by itself in manual mode. Any video? __________________ 2013 Scion FR-S AT Picked up 5/30/2012

10-14-2013, 12:13 PM	#7
dem00n Member of the year - 2016 Join Date: Jul 2012 Drives: Scion FRS Location: New York Posts: 3,575 Thanks: 788 Thanked 2,427 Times in 1,111 Posts Mentioned: 23 Post(s) Tagged: 0 Thread(s)	If i'm correct (And i never am), the auto has a safety feature in M mode that if you go to redline and stay at it for a longer time then need be it'll shift it self so you don't do any damage or go past redline (Which isn't possible really, it'll shift it self). But i might be wrong. __________________ Friends don't let friends Plastidip

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10-13-2013, 11:43 AM	#3
Tye300 Senior Member Join Date: Oct 2012 Drives: Toyota 86 TRD Version AT Location: Manila, Philippines Posts: 883 Thanks: 548 Thanked 599 Times in 283 Posts Mentioned: 20 Post(s) Tagged: 1 Thread(s)	No oil cooler yet. I'm installing a supercharger hopefully by next month and will install the oil cooler, radiator, and if needed, transmission cooler.

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