2uz-fe Operating Temps

smokeysevin

smokeysevin

Re-redoing things the third time
I picked up a scangauge last year and have been keeping an eye on my temps after replacing my radiator. Since it is warming up, I wanted to check and see what everyone else runs at.

Coolant stays between 191 and 193 depending on outside temp. If I am towing or idling in a parking lot with 95+ air temp for long periods of time, the coolant temp creeps to 195 then 197. I have not seen higher than that yet but I also started to ease out of it after a bad experience with my mini cooper s.

I am planning to install a transmission cooler soon and was also thinking about adding an external oil cooler at the same time. Power steering has never given me issues so it is not high on my list but if I will be adding complexity, why not go for broke?

I don't think anything is wrong, I just want to do a sanity check.

Thanks,

Sean
 
Kpack

Kpack

Adventurer
184-186 idling and normal surface streets. 188-191 highway, 195-199 on hills. While towing heavy I've gotten up to 225 on hills. The temperature needle starts to move at 220 and climbs rapidly with each successive degree.

Transmission is all over the map, depending on what I'm doing. I have both the pan and torque converter temps monitored. With normal driving, both temps are the same....higher or lower depending on speed, load and outside temp. Acceleration causes the torque converter to increase, pan slowly catches up. When towing the transmission temp had gotten into some uncomfortably high temps when going uphill (O/D off), though the transmission light has never come on. Which reminds me, I probably need to change my trans fluid.

I have factory external trans cooler, and a large aftermarket PS cooler. Both are covered by a large accessory fan that I can turn on if needed at low speeds. At normal running speeds the aux fan is useless. My hope is that I can use the fan to keep the PS cool while on trails because it has a tendency to overheat and the pump whines like crazy. Trans temps offroad in 4LO have never been a problem.

-Kevin
 
smokeysevin

smokeysevin

Re-redoing things the third time
Kpack said:
184-186 idling and normal surface streets. 188-191 highway, 195-199 on hills. While towing heavy I've gotten up to 225 on hills. The temperature needle starts to move at 220 and climbs rapidly with each successive degree.

Transmission is all over the map, depending on what I'm doing. I have both the pan and torque converter temps monitored. With normal driving, both temps are the same....higher or lower depending on speed, load and outside temp. Acceleration causes the torque converter to increase, pan slowly catches up. When towing the transmission temp had gotten into some uncomfortably high temps when going uphill (O/D off), though the transmission light has never come on. Which reminds me, I probably need to change my trans fluid.

I have factory external trans cooler, and a large aftermarket PS cooler. Both are covered by a large accessory fan that I can turn on if needed at low speeds. At normal running speeds the aux fan is useless. My hope is that I can use the fan to keep the PS cool while on trails because it has a tendency to overheat and the pump whines like crazy. Trans temps offroad in 4LO have never been a problem.

-Kevin
Click to expand...

What is the approximate air temp up there?

Sean
 
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