LC 76 VDJ runnning too cool!

[Dr LC8]

Hi,

Since brand new my Toyota VDJ 76 cooling system seems to be running below normal working temperature. Even in hot weather the water temp gauge it sticks to 1/3 max.
Today we took down the thermostat which is rated at 76C like standard VDJ. We tried a 82C but no difference. We bleed the whole system. Still the same. Connected the car to a Toyota reading tablet and water temperature was raging between 81 and 90 max.
Any idea where the problem is?
Thanks
Nic

 

[1HaytchZed]

Let me get this straight, you're complaining that your new VDJ76 isnt over heating?

 

[lumpskie]

Ignore the stock gauge for a second... do you have a good way to read actual coolant temp? Also, you have an 82C thermostat in there and you are ranging between 81 and 90C? (Is that tablet reading accurate? Too new a tech for me) That doesn't seem to cool to me. (maybe I'm misreading your post.) I'm stuck because it sounds like you are running up to 9 degrees C higher than the thermostat value... which means that the thermostat should be open... which sounds kind of normal.

How are you testing? Idle? Long steep hills? 10 minutes? 1 hour?

Long story short, I wouldn't trust the idiot gauge on the dash. For 1fz rigs, that gauge won't move till you've already overheated your engine.