Bad heater core?

Yetigain

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Jul 14, 2017
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California MD
I let my jeep run for 5-10 mins to warm up the other day. Steam started to seep out of the vents and there was a strong smell of coolant.. It was not overheating but I shut it off and checked for leaks - no leaks under the dash or under the vehicle. Coolant level is normal. I started it again and the heat and A/C work just fine.

After a quick google search it seems like the heater core is bad / going bad, right? Would the heat still work if the heater core went bad? I know it is a labor intensive replacement but I'm sure I can handle it. I would hate to go through all that work if it were something else.

Thanks in advance for any advice / thoughts.
 
Yep heater-core, exact symptoms mine was having. Pic of old one.

MK3r5Sq.webp
 
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no leaks under the dash or under the vehicle. Coolant level is normal. I started it again and the heat and A/C work just fine.
Have you checked the heater hose connections to make sure they are tight? I have an 06 Cummins that has a tiny hose located next to the block behind the turbo that has a habit of seeping until it gets warmed up then the leak and smell go away, I tightened the clamp and no more issues.
 
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Have you checked the heater hose connections to make sure they are tight? I have an 06 Cummins that has a tiny hose located next to the block behind the turbo that has a habit of seeping until it gets warmed up then the leak and smell go away, I tightened the clamp and no more issues.

I have not checked the connections yet but I will. Thanks!
 
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