Sequoia running warm

2012 Sequoia 5.7 runs warm. (gauge sits about 2/3 way towards H). Already replaced thermostat, fan clutch, water pump, and radiator. Temp goes down to normal when rpm runs at least 2000. Help!!

 

Do you have something like Scangage II or other obdii plug in tool?
That would give you an actual temperature reading to confirm maybe the gage is just a bit off.

 

Air in the system?

Do you have one of these for filling the coolant? This helps make sure all the air is out of the system.

$30 OEMTOOLS 87045 No Spill Coolant Filling Funnel Kit with Coolant Tester, No Spill Coolant Funnel Kit, Coolant Tester Kit

https://www.amazon.com/OEMTOOLS-870...70f497d6346633e3a741881433729152&gad_source=1

 

You really need something more accurate than the oem gage to know temps precisely. I use Torque Pro app ($5 for apple or android).

But getting past that for a moment - the fact that temps drops once RPMs increase tell me you have air blockage somewhere between AC condensor and radiator and or fan clutch issues. So check in front of them - between them and behind. Next possibility is a weak fan clutch - test it - does it Roar for a minute on startup?

I don't think its your problem but was radiator cap replaced also?

 

Gauge is working correctly. Replaced cap as well. It's got me stumped. I can drive around the neighborhood and it's fine. I get on the freeway and by the time I've driven 10-15 miles it has slowly worked up to about 2/3 towards hot. I can cook it down by dropping from 6th to 5 th which raises the rpm.