Losing coolant

[Trailabite]

What do you think?

I noticed coolant leaking in my JK yesterday. There is coolant leaking under the overflow bottle, I can't tell exactly where it's coming but that where it is puddling. The overflow bottle is empty but the radiator is full.

When driving I was watching the temps and when I would stop it would heat to 226 and it would cool down to 206 when I started moving. Electric fan is working.

So, thermostat or water pump?

 

[Trailabite]

Figured out the radiator itself is leaking. Waiting for the replacement to show up.

 

[jeeptj99]

Do you have a pressure tester?

 

[Trailabite]

Do you have a pressure tester?

I do not.

 

[jeeptj99]

I do not.

Get one of those and usually you can see where it's coming from.

 

[Trailabite]

For some reason I can't post pictures this morning, but when I took the old radiator out you can see where it had been leaking for a while. It was stained with red antifreeze between the plastic caps and the radiator itself.

 

[jeeptj99]

For some reason I can't post pictures this morning, but when I took the old radiator out you can see where it had been leaking for a while. It was stained with red antifreeze between the plastic caps and the radiator itself.

Was the tank cracked or what?

 

[Trailabite]

Was the tank cracked or what?

I don't know, I haven't looked that close at it yet.

 

[jeeppoor]

The plastic tanks just worked loose. Sometimes you can re pinch the tabs down and get it to reseal.
They are know for this.

 

[TBItoy]

Same thing happened on a co-workers 09, pinched the tanked closed and it held for a while. Then the upper neck just broke off one day.