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So my a/c went out on my 08 overland. added refrigerant and hear a leak coming from the lines going to the rear evaporator core. in order to replaced the lines u have to replace all 4 lines that come in one piece (coolant and a/c) and that part is on back order or discontinued cant find it anywhere. so i was searching the old interweb and found these generic block off caps that cap off the lines going to the rear evaporator. has anyone done this before ? did it work ? will the generic size cap/ plugs work ?
 

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UK based here so my solution might be harder to souce in USA.

I went on E-bay and got an aircon repair kit, basically a set of aircraft grade conectors (like would be used in water system plumbing in the house) and a length of air con pipe from a scrap yard / breakers yaed. cut the damaged section out and replaced it with a piece off the pipe from the breakers yard. took it to an aircon shop, had it regassed and 12 months later its still working.
 

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I blocked mine off with a kit my Indie supplied. I believe it recirculates. Mine was leaking at the cross member which would of required dropping the rear axle and cross member.
 

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I had same issue in my 06. I bought high and low pressure lines for jeep commander without rear AC and installed them which basically blocks off the rear AC.
 

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I can confirm, that getting new lines for XK 3 zone AC is virtually impossible. My mechanic just changed them on my XK and he told me, that he only knows about one other set of lines in Europe and then it is over... I was told after the repair, that I need to regularly clean the drain hole in the heat shield, otherwise they will start leaking soon when the heat shield fills with dust and mud and starts soaking water and corroding the lines...
 

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the commander is a long truck with seats that go all the way to the back, and glass that goes all that way to. it gets hot in the back in summer, and cold in winter.

Jeep saw fit to install Aircon in the rear end, problem was they had to route the pipes somewhere, the weak spot is near the rear offside wheel where the sh1t from the road collects. the fix is 4 conectors (2 for each pipe) and two lengths of reclaimed aircon pipe. splice reclaimed into the damaged section, regas, problem solved.

why ar5e about disonecting the rear end? if it bothers anyone that much just do your bit for the planet and avoid useing aircon.
 

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So, if the ac in my commander, equipped with the rear air, does not work, its probably the lines to the back leaking? These lines run outside the cabin? Exposed to the elements?
 

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I can confirm, that getting new lines for XK 3 zone AC is virtually impossible. My mechanic just changed them on my XK and he told me, that he only knows about one other set of lines in Europe and then it is over... I was told after the repair, that I need to regularly clean the drain hole in the heat shield, otherwise they will start leaking soon when the heat shield fills with dust and mud and starts soaking water and corroding the lines...
My 2006 A/C works well front and rear, and I would like to keep it that way. Where is this heat shield that needs to be cleaned?
 

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So, if the ac in my commander, equipped with the rear air, does not work, its probably the lines to the back leaking? These lines run outside the cabin? Exposed to the elements?
a mistake i admit to making when i first got my commander was to assume the rear HVAC units wern't working when the front end was blowing a veritable gale. I then found out that it has to be swtiched on from the dashboard mounted switches - and it started blowing. Yes the pipes run under the vehicle to the rear. somewhat exposed yes.

My 2006 A/C works well front and rear, and I would like to keep it that way. Where is this heat shield that needs to be cleaned?
I found a heat shield / guard plastic plate thing just behind the rear wheel behind which 'road debris' had collected and caused (in my opinion) the pipes to corrode. i didnt replace it after the repair and now the 'road debris' doesn't collect there. but the pipes are slighty more exposed to damage without it being replaced..
 

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My 2006 A/C works well front and rear, and I would like to keep it that way. Where is this heat shield that needs to be cleaned?
He showed me that spot: when you kneel down right where the exhaust tip is located and look up at the bottom of your vehicle, there you will see the lines going from the center of the vehicle towards the passenger side of the vehicle and there, at the very side of the vehicle, the lines disappear above a shiny aluminum heat shield right above the resonator... That heatshield has a small drain hole that you need to keep free to drain the water and debris... If you can, clean it thoroughly so that you remove the mud a debris...

Also, once there, inspect the lines above that heat shield. When they look like some salt is accumulating on them, you might have problem soon... I've seen the old lines he removed from my vehicle, they weren't leaking yet, but there was huge deposit of something that looked like salt or something of that nature and he said that when you can smell the oil from the AC compressor, they will go bad soon...

 
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