I broke this heater hose 90 degree elbow when giving the jeep a tune up... Passenger side near the firewall. Looks like it can only be replaced as a whole. Any advice would be much appreciated! Especially because now I have to ride my yamaha to work in the cold tomorrow...

 

Heater control valve.
Bypass it with 2 hose couplers and cap the vacuum line.
You'll never miss it.

 

Any ill effects. When I broken mine I thought I had to replace it. So I did. Does it mess with AC?? Mine has been bugging me cause that stupid vacuum keeps coming off.

 

Nope, none at all.
Late model XJ's don't have them.

Air is diverted by the blend door. The air goes through the evaporator or the heater core, but not both.

 

!/2 inch copper plumbing pipe fits in heater hose niftyely.

 

Stupid. My buddy's old lady wanted to help work on my jeep and broke that. 40$...

 

I once described it, "Be careful! Those things are built like those toy cars where you push in the bumper and the whole thing flies apart!"

 

So no coolant actually passes through it? I haven't started it yet. Don't want to find out the hard way..

 

All I care about is the heat, no ac and this is Wisconsin..

 

that would be a diverter valve for the heater. tried to find one once wound up going chrysler for the entire cooling system. the old amc valve is set up different

 

I just removed mine the other day for that reason, they always break. Get 5 feet of heater hose, run straight lines from the tstat housing and water pump to the heater core.

 

auto zone have these for some where around $20 I know I broke 3 in one year doing the same thing.finally I got tired of replacing them and got longer heater and extended the vacuum line to the fire wall now I dont have this problem any more

 

you have the AMC renix setup you cannot bypass this one because of the expansion tank

 

The factory cleaned things up when they eliminated the HCV in '97. As mentioned, just get some bulk heater hose (5/8" & 3/4") at the parts store and go direct from the motor to the heater core.