Losing coolant

See what he says. Hopefully it's just something simple.

You're having a unique experience. I say that, because assuming you take care of the 4.0 engine in your Jeep, it's honestly one of the most bullet proof and reliable engines out there.

The kicker is that a lot of times the person who owned it before you didn't bother taking care of it, so then you end up being the one who gets to deal with the problems. The good thing though is that the problems aren't going to be huge ones like bad piston rings, crankshaft bearings, etc. (well, it's possible, but very uncommon), it's usually simple things like gaskets, seals, electronics, etc.

Seemed well cared for... but who knows I guess
I feel helpless.
 
Get it to the mechanic, unfortunately that's your only option at this point.

If it was mine I would get out all my tools and fix it myself, but obviously not everyone has the same level of experience when it comes to working on cars, so I totally get it!
 
Any spots on the block that look oddly colored? I've seen small leaks that evaporate off on the block before they drip.
 
Well that's easy and cheap!

They're also going to check in on the head gasket possibility for me. And then we will address the loss of power thing... O2 sensor, TPS, fuel pump, fuel filter, apart plugs? Ugh.
 
Serpentine belt is easy, thermostat is easy as well. The most expensive thing I could see would be the head gasket.

Sounds like it just needs a good tune-up / overhaul.

If that's the stock water pump, it's not surprising it's gone bad!
 
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Yeah. He said he didn't see evidence of the head but he'd check it out... So perhaps the 4.0 is indeed worthy of all the love [emoji173]️

An overhaul would be a very good idea.
 
It's worthy. The problem is, just like any other engine, if you rack up the miles and never do any maintenance, you'll eventually be in a situation like you are now.

My guess is that no one has ever replaced the water pump, thermostat, fuel filter, etc. At over 100k, those things definitely need to be replaced (on any engine, even a Toyota). Once you get all those things taken care of though, you'll have the piece of mind that you won't have to worry about it for a long time.
 
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It's worthy. The problem is, just like any other engine, if you rack up the miles and never do any maintenance, you'll eventually be in a situation like you are now.

My guess is that no one has ever replaced the water pump, thermostat, fuel filter, etc. At over 100k, those things definitely need to be replaced (on any engine, even a Toyota). Once you get all those things taken care of though, you'll have the piece of mind that you won't have to worry about it for a long time.

That'll be great! ...I want to love my TJ unconditionally...forever.
 
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That'll be great! ...I want to love my TJ unconditionally...forever.
I had an XJ with the six in it that had over 230,000+ hard miles on it. Always started and always ran. Reliable as the day is long. It was a a work rig, ex-Forest Service, and was horribly abused maintenance wise. Give your TJ a little love'n once in awhile and it will last a good long time.
 
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Would fuel filter be a sensible place to start as I try to figure this loss of power/stalling out during acceleration thing? One of my gear head clients suggested the mass airflow sensor? ... maybe the exhaust manifold?
 
Would fuel filter be a sensible place to start as I try to figure this loss of power/stalling out during acceleration thing? One of my gear head clients suggested the mass airflow sensor? ... maybe the exhaust manifold?

Fuel filter is cheap and easy, so may as well replace it anyways.

There is no mass air flow sensor on a TJ though. As for the exhaust manifold, if it's making noise and you suspect there is a crack, yes.