Engine leak / random hose to nowhere

[TJ4Jim]

possibly..

I did turn on the defrost Friday night driving home from a softball game..

Heat and defrost still work, or it did last I used it prior to Friday night (6mo ago maybe) The AC doesn’t work because the previous owner had an audio fuse (that ran between an amp In the back and the battery) burn a hole in a refrigerant line (I’m surprised it didn’t catch on fire TBH) and it was going to be expensive to fix, so I never did.

FWIW, the burnt wire/fuse was one of the first things I replaced 3 years ago when I got the Jeep. But was unaware it had burned a hole in the line until I went to get the AC fixed and the mechanic showed me. I immediately knew it was from the fuse burning.

What color is your coolant in the rad.

 

[4Jah]

What color is your coolant in the rad.

neon yellow/green

 

[4Jah]

I filled the coolant, and am driving it down the road about 20 min to play disc golf.. it wasn’t dripping when I left the house.. I’ll check it when I get to the course.

 

[4Jah]

I filled the coolant, and am driving it down the road about 20 min to play disc golf.. it wasn’t dripping when I left the house.. I’ll check it when I get to the course.

coolant reservoir is empty again..

Couple guys here just told me to use Blue Devil... thoughts here about that?

 

[MountaineerTom]

The coolant will feel a little slick/oily too. When my heater core started leaking on my 2006, I could smell that sweet like smell inside the cab when I first turned the heater or defrost on. I knew it was on its way out. Eventually I got a leak out of the same tube you circled in your picture. I did the work myself but I did take it to a shop and had the A/C evacuated. While there I asked what they would charge if they did the whole thing. He said it would be $800. After completing the job I took it back to them and had the A/C system charged back up.

I replaced the heater core and A/C evap core while in there.

Your 1999 will use a different core than what I used.
https://wranglertjforum.com/threads/another-heater-core-replacement-and-a-c-evap-core.15568/

 

[CharlesHS]

coolant reservoir is empty again..

Couple guys here just told me to use Blue Devil... thoughts here about that?

IF the coolant reservoir is empty again; did you ensure the radiator was full before filling the reservoir ?
The reservoir coolant may have just ended up inside the cooling system the way it's supposed to....
Did you end up will A LOT of yellow liquid under the evaporator drain ? Did you have a sweet smell inside the cab as others have posted ? IF so... then you have a leaking heater core; IF not.... then I will stick with what I posted.