iNanni

So I was under the hood checking the ATF level today, and i noticed the hose at the top of this fitting was dripping a bit of antifreeze. Jiggled it a bit and it must have cracked it more because it starting spraying out, another jiggle and the whole top hose cracked off the fitting. So my question to you guys is, what exactly is this fitting? (Link to auto part please?)
And how exactly do I go about replacing it? I obviously can do the hose clamps, but the unit on the side, which i assume is some sort of sensor, I don't know how to go about changing it.

96_xj

it is the heater control valve. (notice it has a vacuum line going to it)

they are about $15-$30

iNanni

Yes I just came across that aswell, thank you.

djb383

Chrysler/Jeep eliminated the heater control valve '97 up. A couple of longer heater hoses and cap/plug the vacuum line......no more breaky/leaky heater control valve.

iNanni

Interesting... So you just run the two hoses from the front of the block to the two connections that this 4 way splits them to?

djb383

The 2 heater core nipples at the firewall, the t-stat housing and the water pump are your hose connections.

garb.man

he said nipple!!

Lrobin18

So I did notice the vacuum line connect but I don't see a line it should go to. Any ideas? Or do you just leave that free? Thank you very much!

RTorrez1

You just need to plug it off.

CCKen

Lrobin18

Why is that? Cause mine wasn't capped off before. Just curious.

BlueRidgeMark

If you don't cap it, you have a vacuum leak. Engine not happy.


To the OP: Heater hose is cheap. I suggest buying enough to run it where it needs to go, with no splices. It will look better and you'll have fewer places that are susceptible to leaking.

cruiser54

So I see someone else had a similar experience to mine.

I got sprayed full blast in the face with hot coolant.

Ditch it!!!!