What arethese and where do they go.

[VixJeep]

I've looked at numerous pics and vacuum drawings, but I still haven't figured out what these are. This is on an 88 Pioneer w/air, 4.0, 5sp manual. My blower blows all the air through the defrost, so I thought these might be the vacuum lines that work that. I am referring to the black and white lines that come through the firewall just below the overflow tank and above the blower motor.

 

Its been a great week for Jeep projects. I got my parking and blinker lights going again, got an alternator, vacuumed leaves from the blower motor, mounted the rear view mirror, got a new hood, did the headlight wiring upgrade, and fixed the broken headlight adjusters,

[eaglescout526]

The white which at one point was grey controls the heater valve for the core. The black one is what controls vacuum for your vents. There should be a reservoir in the bumper and one end should lead to a broken end that needs to plug into that line. Then you'll get your vent air back.

[VixJeep]

OK. The black line connects to the broken vacuum hose. Could you be more specific as to where the white one goes? Just want to make sure I get it right.

 

[jdog]

the white one would go to a valve on the heater hoses, it looks like its been deleted, just plug the white line and it will be fine.

[VixJeep]

Thank you so much. After vacuuming a volume of leaves from the fan area, it was blowing again, but all up top.

That was maybe the quickest, cheapest fix ever. 

But then I messed around and found the guide of everywhere in the A/C I need to take loose and replace the o-rings. I already have a new compressor, dryer, and evaporator installed, but I've never changed an o-ring so it leaks. I even found the pack of o-rings I bought to do it. Looks like I have found  me a Sunday project.

 

 

[cruiser54]