Intermediate Radiator Leak

[Pat1998]

98 Jeep Wrangler. After starting up I am having a decent amount of coolant leak from the bottom housing of the radiator. Will drip steadily for 5-10 minutes and then stops all entirely with no more leaks. Seems to only occur starting up after sitting for a couple days.

No visible leaks/ cracks in radiator from what I can see.

 

[Unique Username]

Cool story?
I had a radiator that would also leak a small amount every so often. A few drops. Ran it for many years. Replaced it and no more leaks. When I replaced the radiator I did everything. Hoses, water pump, thermostat, the whole shabang. Shortly after I also had to replace the heater core. Buckle up.

 

[Link]

New radiator time. I went with a Denso.

 

[mrblaine]

98 Jeep Wrangler. After starting up I am having a decent amount of coolant leak from the bottom housing of the radiator. Will drip steadily for 5-10 minutes and then stops all entirely with no more leaks. Seems to only occur starting up after sitting for a couple days.

No visible leaks/ cracks in radiator from what I can see.

View attachment 591248

Pretty common. The tanks are sealed with a rubber o-ring that lose elasticity over time. When that happens, it will seep a bit until the radiator warms up and then stop when the heat swells it back to size.

 

[mrblaine]

New radiator time. I went with a Denso.

He needs to be aware that they only work where it doesn't matter. If it does, they don't cool very well at all.

 

[MountaineerTom]

He needs to be aware that they only work where it doesn't matter. If it does, they don't cool very well at all.

The single row Denso radiators haven't cooled well?

 

[Link]

The single row Denso radiators haven't cooled well?

They work just fine even in very hot temps.

 

[macleanflood]

Constant tension clamps might help too.

-Mac