Y61 Still overheating..

[YeatyGU]

Hi Guys, iv tried near everything so iv turned to the forums for some advice or help.
I Brought a Patrol around 3-4 months ago and after a week of owning it I discovered it’s getting hot. At first I done all the standard measures and now have gone to all the lengths I can think of and the problem persists. The patrol is near factory motor wise, just had a 3” lift and 35’s, whinch bar and roof cage. Here’s what iv done so far.
New thermostat
Blocked the bypass completely
Installed 3 core 52mm radiator with electric fans
Had earthing points cleaned and or replaced
After market water temp gauge on dash

Highway cruising it sits around 100 degrees but any slight incline or acceleration and the tempature shoots up. By the time I pull over the factory gauge no longer reads hot.

From what iv learnt that highway cruising temp is far higher than it already should be. I’m out of ideas and ready to give up and send it to a shop. Anyone had a similar problem ? Or might know a solution ?

No my water is not bubbling or spewing out, I don’t think I have a cracked head or head gasket

[mudnut]

Welcome to the forum. Which engine is it? Is the fan shroud fitted?

[YeatyGU]

It’s a TD42, I have an aluminium shroud accomodating the electric fans
Cheers

[mudnut]

It’s a TD42, I have an aluminium shroud accomodating the electric fans
Cheers

Some members have had success using an after market water pump. @mudski should be able to help you.

[Stropp]

I run std radiator and pump but a ufi fan and hub and no problem at all, check your thermostat would be the next thing I’d check

[YeatyGU]

I plan on doing the water pump tomorrow 👍 will update you then

[YeatyGU]

I run std radiator and pump but a ufi fan and hub and no problem at all, check your thermostat would be the next thing I’d check

Iv checked and replaced the thermostat to a 76.5 genuine Nissan one, made no difference

[MB]

G’day @YeatyGU Mate
In my honest opinion, having flogged towing the death out of quite a few TD42..&T’s (work & family nag float stock setups say :-) their downfall outa factory has been airflow & weak viscous coupling longevity.
Clean their radiators & a/c condenser’s for full frontal air flow and be sure your fan oem or aftermarket is locking at 100% when under duress.
Mountain truck climbing wise at under 10kmph is where higher flow idle rate water pumps and elecy assistance fans come into hard play IMHO.


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[MB]

FWIW: The oldest faithful GQ ute did truly appreciate UFI’s full replacement fan/viscous after 25 year old OEM viscous started slipping up Thunderbolts Summer Highway hauling climb


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[MB]

Hi Guys, iv tried near everything so iv turned to the forums for some advice or help……..

The patrol is near factory motor wise, just had a 3” lift and 35’s, whinch bar and roof cage……..

Highway cruising it sits around 100 degrees but any slight incline or acceleration and the tempature shoots up. By the time I pull over the factory gauge no longer reads hot.

Apologies for Snippets @YeatyGU Mate

Your symptoms sound exactly like airflow issues, thermostats wise I’ve tested all 3 x OEM available and neither make a lick of difference to max temperatures, only idling/cruising temperatures.
This thread could go on forever but rest assured if you were to reset back to OEM factory specs and tweak to suit your usage plans you might hopefully be surprised with simplicity Brother


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