JLU 2.0L coolant leak

[Christx0277]

There is definitely a leak. Never a drop on the ground. I took to independent shop and they did a pressure test and called 2 hours later to say it’s leaking from water pump. I originally suspected the thermostat or something. The water pump did have the SB performed in 23. I did not have them fix as that would be covered by the powertrain warranty. That was on Saturday. They topped off coolant and I left around 10am. Around 7pm Sunday I checked the level and it wasn’t even registering on the dipstick. So I topped it off and took to Jeep Monday morning. It’s been there 4 days now. They said they also did pressure test but found no leaks.
Could this leak only happen when the engine is at operating temp? But I have never seen any indication in the garage where it is always parked. I have caught a faint smell of hot coolant when I get home sometimes, but never thought anything of it.
Anyone had or heard of something like this? Any ideas on where to tell Jeep service to maybe look?
Thanks for any insight!

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[Gray Dawg]

It could be from your heater hose. There is a T-Fitting on the drivers side just under the rear corner of the cover that goes bad. Mine was leaking, never a drop of coolant on the ground and couldn’t see it well enough to even know it was leaking. I just repaired mine and made a post about it with pictures.

https://www.jlwranglerforums.com/forum/threads/rotted-heater-hose-t-fitting-leak-repair.157533/

Hope this helps.

 

[mwilk012]

It’s very common for water pumps to only leak at operating temperature and or when the engine is running.

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