Scangauge Programming - Transmission temperature

[Skidoo]

I have seen t-case as high as 180 degrees for highway driving, the few times I have checked. I carry an IR thermometer.

 

[yooper]

I think it's reading a little hot. I parked the 100 outdoors at work today all day, about 8 hours. Outdoor temp was 24°F. The ScanGauge said the ATF was 45°F immediately upon starting up. It warmed up to about 100°F and stabilized there on the way home, a little less than 4 miles, top speed 45mph.

 

[2000UZJ]

I MUST try this on my road trip tommorow! Sweet. Thanks for posting the codes

 

[moooooooo]

can we put this into the stickie please if it hasn't been already?
This stuff is good to know
cheers
peter

 

[yooper]

I think it's reading a little hot. I parked the 100 outdoors at work today all day, about 8 hours. Outdoor temp was 24°F. The ScanGauge said the ATF was 45°F immediately upon starting up. It warmed up to about 100°F and stabilized there on the way home, a little less than 4 miles, top speed 45mph.

Parked in the garage overnight, which I keep at 55°F. The ScanGauge said the ATF temp was 68°F this morning at startup. Warmed up to 105° F on the same drive and stabilized there....

 

[spressomon]

Dropped the code in and now I have tranny temp! Thanks to all!

 

[e9999]

these OBD numbers are much lower than those on my 80.
They look real low by absolute standards too. Of course, my temps are not close to steady state in 4 miles.
Where is the sensor?

 

[yooper]

The sensor is in the ATF.


(I have no idea)



I did a little longer drive today, maybe ten miles. Engine got up to regular temp, 188°F, and the tranny stayed about 100-115°F most of the time. City driving conditions, never over 50mph.

It does seem kind of low but I have no idea what it really should be. I guess I could do a tranny case IR temp measurement sometime...

 

[spressomon]

I don't know what temp for the tranny would be "normal". However I do know the t-case, without the benefit of a cooler like the tranny, can run very HOT! You can feel its heat, again on a hot summer type day when wheel'n, coming up through the floorboard.

I'm interested in monitoring the tranny temps for those hot summer days when grinding up a long pass with trailer in tow.

 

[2000UZJ]

doesn't work on my 2000. checked the codes 3 times

 

[LandCruiserPhil]

From the FSM
Transmission normal operating fluid temperature 70 - 80 °C (158 - 176 °F).

 

[spressomon]

Thanks Phil!

 

[LandCruiserPhil]

Plug the scangauge in my '99 and I now have trans temp

 

[mot]

 

[2000UZJ]

I'm going to try to re-enter the codes. I'll post up later if it does work. I'll be on a 150 mile trip friday and can take readings when I get off the highway.

 

[tsarte]

I just tried it on my '05 and it did not work for me.

 

[BManning`]

Works on an 02!!

Just picked up my Scangauge II from AutoZone; had one in the past but it got stolen mad: f'ers) and just now finally replaced it.

Plugged in the codes for trans temp...and...IT WORKS!!

About to drive to the airport to pick up the wife; will report the data back.

EXCITING!

 

[BManning`]

If Scangauge is accurate, my transmission runs cooler than the FSM values posted earlier (though those might've been for the 5-speed; not sure, I think Phil owns both).

About a 40mi round trip, from the burbs to Phoenix Sky Harbor & back. Hottest trans temp seen was 150F, right after getting off the highway to finish the trip home; cruising temp on the freeway at 70-75mph was ~123/127F (mid 120s). Torque converter lockup (as expected) plays significantly into temp; I remember my F250 was the same way (had an AutoMeter trans temp gauge).

Stoplight to stoplight, it seems to run ~137/140F, then cools off fairly quickly to ~134 when idling in park for a minute.

I'll see how the temps read on tomorrow's commute.

 

[mot]

I wonder what year(s) work for the AT temp?

So far it's Phil's '99 and BManning's '02???

 

[yooper]

My ScanGauge reports about 115 degrees F on the highway for ATF temp. It's got to be too low but I don't have any way to calibrate it. Still useful as a trend indicator, the actual number isn't all that important.