Hi everyone,
My 04 Disco is been going all the way up to 230° F when I turn the AC on. With no AC temperature stay under 200° and can go up to 210° in when Las Vegas is about to get burned.

Let me make a list of my scenario:
- Discovery 2 2004, 148k
- 4.6L. With engine oil cooler
- 33s
- New head gasket
- New clutch fan
- New radiator
- New coolant / sistem was flashed / green Prestol
- New inline 170° thermostat
- Serpentine belt inspected looks good
- Water pump inspected good

Today a mechanic fixed my AC because the high was over charged and I thought fixing it will help. The AC was charged properly according to the lr instructions. It didn't make any difference, my temperature still reaching 230° when AC is on.

With no AC my temperature stay under 200° . Any idea will be much appreciated. Thank you.

 

Air in the cooling system?
Inline t-stat pointing in the correct direction?

 

Cooling sistem was bleeding, no air in the sistem. Also t-stat is in the right direction. I was paying attention to those details. Today my mechanic said he think it need a new AC condenser because mine has some damage on the fence from stones and sticks etc.

 

I make sure the inline is pointing in the right direction and the sistem was bleed correctly. Overheat only when AC is on.

The mechanic suggested to get a new ac condenser

Any other idea?

 

First thing is... why is your fan shroud cut back to expose the fan????
that might be the problem. The fan won't be able to draw adequate air across the radiator fins to cool.

 

That's a Chevy fan with new viscous clutch replacing the original and only make -2° difference compared with original, the shroud was trimmed because this fan was touching the top a little bit. I leave it like this because again it didn't make any difference.

 

Hi you need to check the thermostat to be replaced, after put water into the engine you most blind the engine very well, by putting water into the reservoir and water will be coming out from the returning holes and before fixing the gasket on the block engine did the mechanic, resurfaced the cylinder Head those three things are very important, you are welcome