Montero Sport, Lower Radiator Hose Cold, new Thermostat, new radiator cap, gauge in the middle Options

[Sebastian_2010]

Hey Mitsubishi Forum,

I searched the forum but couldn't find the topic, so here is my problem:

--> it seems my lower radiator hose is too cold.

- I replaced the thermostat and the radiator cap
- I have nice pressure on both hoses
- the upper is hot, the lower is cold, maybe hand-warm
- my gauge is and stays right in the middle
- the heater blows hot air, when I want it
- I used prediluted coolant/water mixture, so I guess, that is ok
- changing the thermostat, I flushed the engine and heater core, no dirt left, I guess...

Even after 12 miles driving the lower hose is [totally] cold.
Is that normal??? Any suggestions?

I wonder if I have to take the [just new] thermostat out again and put in boiling water or replace again...?

Any thoughts and ideas greatly appreciated.
Thanks

[Sebastian_2010]

Hi all,

nobody has some input on this issue?

- is it either OK or should I be concerned and do something about it.
BTW, I have around 179K on it and I'd like to put some more miles on it, so

your advice is appreciated.
Thank you

Hey Mitsubishi Forum,

I searched the forum but couldn't find the topic, so here is my problem:

--> it seems my lower radiator hose is too cold.

- I replaced the thermostat and the radiator cap
- I have nice pressure on both hoses
- the upper is hot, the lower is cold, maybe hand-warm
- my gauge is and stays right in the middle
- the heater blows hot air, when I want it
- I used prediluted coolant/water mixture, so I guess, that is ok
- changing the thermostat, I flushed the engine and heater core, no dirt left, I guess...

Even after 12 miles driving the lower hose is [totally] cold.
Is that normal??? Any suggestions?

I wonder if I have to take the [just new] thermostat out again and put in boiling water or replace again...?

Any thoughts and ideas greatly appreciated.
Thanks

[Nur Othman]

Hey Mitsubishi Forum,

Even after 12 miles driving the lower hose is [totally] cold.
Is that normal??? Any suggestions?

Any thoughts and ideas greatly appreciated.
Thanks

Hi,

I guess, if everything is running fine & well, then there's nothing to worry about.

That said, the laws of convection is always flowing from hot to cold to hot, and hot always rises up and cold flows down. So, of course, the bottom part of the radiator will be cold as cold water is flowing out into the engine block, gets heated up, rises through the circulation ducts and exits the engine at the top hose into the radiator again, which, by now, would be boiling hot. It gets cooled down again through the radiator fins as it flows downwards, and the process if repeated.

I wouldn't worry myself with too much details here as long as the indicator level (temp. gauge) is within a reasonable range (middle or slightly lower). But you should start to inspect your cooling system if it gets way above the mid level.

HTH.