2004 Tacoma PreRunner SR5 Temp Gauge

Ive seen some posts about this before, but still haven't gotten a valid answer. What is the optimal temperature for my truck to be running at and how would I check it?

 

My transmission temp ranges between 160-170 degrees with normal driving.

My engine temp before I had my old Yota OEM T-stat part replaced ranged between 180-190 degrees. After the old t-stat was swapped with a new Yota OEM part it runs a bit higher now between 190-200 degrees. There have been several reports that the new OEM T-stats run at a higher temperature.

Also I think it's safe to say that if both temps are below 200 degrees on your taco you are good to go. Also you will want to make sure your transmission temp is not too hot but it should also not be too cold (especially for those cold weather states) for optimal performance and longevity.

I recommend you use a scangauge via OBD2 port to monitor both your engine and trans temp (via x-gauge). An ultragauge, although cheaper, at this time will only allow you to monitor engine temps on our Tacos.

 

Yes... I recommend the scangaugeII. It's an excellent way to keep an eye on things. My daily running temps range from 90-93 celcius for engine temps and 170-200 ferhiniet for tranny temps. It displays 4 readings, so I have ATF temp, engine temp, VLT, and intake temps. You can also scroll through a bunch of other readings as well. Very good investment. Especially for only $115

 

Off topic, how did you guys get the trans temp reading on your scan gauge?

 

Click HERE for the SG code trans temp.

 

Are you running a trans cooler or just running the stock one through the radiator?

 

I have a new external cooler in the garage that is ready to mount so I can bypass the radiator to avoid the "pink milkshake" from ever occurring in the future.