NEED HELP, cooling system 99, 2.5 auto P38

[Irishss]

Back again…
Acquired a 99 2.5 diesel auto.
New service, brakes, in tank pump and running great..

Drove it 4 days no issues.
Other day she got hot and cut out..
I let her cool and made it home.

Radiator is was replaced before I got it..a Nissans Radiator.
New water pump, thermostat, fan was working ok..
Put it back together, flushed rad, heat on, idle ok, adding coolant etc..

Put cap back on and the rad hoses were getting very hard..
When idling no bubbles..

Any help greatly appreciated..

The thermostat and water pump I removed where ancient…
Fan sounded a lot better with the new water pump..
Clean egr, vehicle has buckets of power now..

But the rad hoses keep getting hard…

Is there a test kit I can buy to check the head..??
Thanks

 

[kermit_rr]

Yes there's a sniff test liquid you can get but make sure you get the diesel one. You can get universal ones that work on petrol and diesel but I'm not sure how good they are

 

[Mark Piercy]

How does the fan sound on cold start up?

 

[Irishss]

How does the fan sound on cold start up?

Fan sounds great, bloody engine sounds great to after water pump and all service items

 

[Mark Piercy]

How does it sound, does it roar or is it quiet on cold start up?

 

[kermit_rr]

How does it sound, does it roar or is it quiet on cold start up?

It should also be stiff to turn by hand when it's stone cold in the morning

 

[Irishss]

It should also be stiff to turn by hand when it's stone cold in the morning

When I had the fan off, it was stiff when I rotated it…

 

[Irishss]

How does it sound, does it roar or is it quiet on cold start up?

It does not roar

 

[brianp38dse]

It should roar like a tank on start up then go quiet then roar again when it gets hot.
just because its turning does not mean its working right.

 

[RangeRoller dt]

Newspaper test - roll up a newspaper and slowly insert into the viscous fan. When cold it should stop the fan turning but as engine warms it should get more resistance and try to shred the newspaper. (Free when cold - locked when hot)

Careful to keep all fingers away and don’t wear a tie

 

[Datatek]

Viscous fan failure is common so I have dispensed with it and use the aircon fans for cooling.

 

[Irishss]

Viscous fan failure is common so I have dispensed with it and use the aircon fans for cooling.

So remove it and leave the 2 in front on??