2014 elevated coolant temp when idling

[BluesBro]

If the fans are coming on, I kind of doubt they are the issue.

If it were me water pump would be what I'd be checking next. Interchange is pretty wide and rockauto has a gm genuine for about 200$, also grab a thermostat if you haven't already.

Screenshot 2025-04-28 at 9.47.19 AM.png (64.28 KiB) Viewed 1768 times

[VintageIron41]

Thanks Bluesbro, I had gone to an Australian Holden site and found that the LS3 pump from 2010-2015 should work with the L77, Flowkooler offers one, so I ordered that. Should that not address the problem, I measured and found a Spal 10" pusher fan looks like it would fit on the passenger side on the front of the radiator, I would wire it with just an on/off switch with a fuse if it comes to that.

[VintageIron41]

no upgrades on the fans , unless you custom make things

Thanks s/c'd cav, kind of surprised there isn't a supra factory cooling option, hey somethimes you have to customize things, my IH panel truck with 5.3L.

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[s/c'd cav]

no upgrades on the fans , unless you custom make things

Thanks s/c'd cav, kind of surprised there isn't a supra factory cooling option, hey somethimes you have to customize things, my IH panel truck with 5.3L.Panel truck enginebay.png

OOOOOOOOOOO , very nice !!

[VintageIron41]

no upgrades on the fans , unless you custom make things

Thanks s/c'd cav, kind of surprised there isn't a supra factory cooling option, hey somethimes you have to customize things, my IH panel truck with 5.3L.Panel truck enginebay.png

OOOOOOOOOOO , very nice !!

Thank you!

[Sanford]

Have you looked to see what percentage the fans are turning on when it is hot?

[VintageIron41]

Have you looked to see what percentage the fans are turning on when it is hot?

Sanford, how can I determine the percentage? They both come on, first at a low rpm, then at a higher rpm, thre are times when one of both sound confused and rpm fluctuates.

[Sanford]

Get ahold of a decent scan tool that reads all of the modules on the car. It will you the percentage.

[Mooseman]

Or rather a scanner that can show live data.

[Sanford]

Or rather a scanner that can show live data.

You are correct, I left the live data part out, but
I would bet that if the scanner will read all of the modules, it will show live data.