I'm fairly new to working on 1996 Jeep Cherokee so I'm not super familiar with all the parts. I was putting my IAC back after cleaning it when I noticed the following hose line was fairly loose. Does anyone know if it should be like this and let me know what it is called? I tried looking around for images that showed what parts are connected to the intake manifold, but I couldn't find what its called. Thanks for the help!

Edit: I've tried uploading photos, but it keeps failing. So bare with me until I get it figured out. Sorry!

 

 

That looks like the corresponding part to the one that I just fixed on my 1996 XJ. Seems to be HVAC related, if it is the same one. Vacuum line runs back along firewall and enters firewall above heater box area. My factory setup looked different, had 1 rubber hose of 2 different diameters that connected the manifold fitting to a check valve to the tube.

I got a new piece of hose of the larger ID and put one layer of shrink tube on the check valve end to snug it up and reassembled.

Note: My rubber connector line was broken for years, maybe decades, and I noticed absolutely no difference in the operation of anything before the repair or after.

 

Could that cause issues with the AC? I've found that my AC stops when I accelerate, but I haven't been able to diagnose why. I've read that a vacuum leak could cause this issue. Thanks for the info btw!

 

Well, my A/C has been out for a long, long time so that might be why I didn't notice any difference after the repair.

 

Pix at this post, glad someone recently quoted it because I am too lame to find my old work here:
https://www.cherokeeforum.com/f59/wh...6/#post3577954

 

So it does run along similar to how you described where it reaches a T. One part goes back into the wall and is hard to follow, but one goes into the following. What exactly am I looking at here? Is this the HVAC check valve?

 

Cruise control actuator.

 

Ah, I don't have cruise control on mine, so no T and no actuator.

 

Changes which vent it's coming out of, or gets warm? Changing vents would be a vacuum issue. The engine computer will normally disengage the compressor when your at wide open throttle. If you're not at wide open throttle, I'd suggest testing the TPS. If your automatic is shifting oddly, that would also point to a TPS issue.

 

When I start to press the accelerator at all, it changes from blowing from the normal vents to only blowing from the dash/defroster area. It only returns to normal if I stop pressing the accelerator and start to cruise. From what I can tell, it seems to shift fine with no obvious issues. Obviously, AC isn't super crucial, but it sure would be nice to have in the summer hell of the south! lol

 

Vacuum check valve. I removed mine and got my AC selector valve working again. It was stuck on defrost before. I need to get a new one but until I get some irrational twitch to do so I'm happy with the way the truck runs now.