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21-03-2019
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CrawlerStar
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Join Date: Jan 2009
Location: Brisbane
Posts: 326 What Jeep do I drive?: JK
Likes: 7
Liked 23 Times in 13 Posts
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Aircon Evaporator leak - Dash removal
Hi All,
Has anyone replaced the aircon evaporator, I've been told I have a leak either at the o ring or at the evaporator. Talking to aircon and Jeep shops I get a mixed message if the evaporator generally fails or s it more than likely to be just the O ring. Whatever the issue it looks like the dash has to be completely removed as the vehicle was built around the air box
Has anyone had this issue?
__________________
Regards Dave G
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22-03-2019
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CrawlerStar
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Join Date: Aug 2015
Location: Sunshine Coast
Posts: 355 What Jeep do I drive?: JK
Likes: 74
Liked 111 Times in 81 Posts
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I presume it's a leaking heater core, when you say evaporator and talk about dash removal. While I haven't had a problem with mine, I have comes across a few videos on Youtube about replacing the heater core.
Good luck - I had a leaking heater core in my old Holden Rodeo and that was a #$%@ of a job because it needed the complete dash removal. It's usually behind the middle of the dashboard, above the transmission tunnel.
__________________
The average human walks 1,500km per year and drinks 83L of beer which means we're getting 18km/L.
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22-03-2019
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CrawlerStar
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Join Date: Jan 2009
Location: Brisbane
Posts: 326 What Jeep do I drive?: JK
Likes: 7
Liked 23 Times in 13 Posts
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Quote:
Originally Posted by st_za
I presume it's a leaking heater core, when you say evaporator and talk about dash removal. While I haven't had a problem with mine, I have comes across a few videos on Youtube about replacing the heater core.
Good luck - I had a leaking heater core in my old Holden Rodeo and that was a #$%@ of a job because it needed the complete dash removal. It's usually behind the middle of the dashboard, above the transmission tunnel.
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Hi, Not the heater core, this is working fine. I'm referring to the aircon evaporator which is also in the airbox. No Youtube videos on this one.
__________________
Regards Dave G
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27-03-2019
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Established Member
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Join Date: Jul 2010
Posts: 137 What Jeep do I drive?: JK
Likes: 29
Liked 13 Times in 9 Posts
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It’s essentially the same procedure for the evaporator and heater core. Both require full removal of the dash, as you said. It’s a huge job, well beyond most amateurs. If there’s a chance the leak is at the firewall seals, I’d definitely investigate that thoroughly. Are you getting any evidence of air conditioning gas venting into the cabin?
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27-03-2019
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CrawlerStar
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Join Date: Jan 2009
Location: Brisbane
Posts: 326 What Jeep do I drive?: JK
Likes: 7
Liked 23 Times in 13 Posts
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Quote:
Originally Posted by bagnkat
It’s essentially the same procedure for the evaporator and heater core. Both require full removal of the dash, as you said. It’s a huge job, well beyond most amateurs. If there’s a chance the leak is at the firewall seals, I’d definitely investigate that thoroughly. Are you getting any evidence of air conditioning gas venting into the cabin?
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Hi, when we had the vehicle in for a recharge the mechanic investigated a leak to behind the dash. It leaks too fast to detect venting in service.
Does anyone know if the same evaporator is used arcoss all JKs as I can get a better price from the USA?
__________________
Regards Dave G
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28-03-2019
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Established Member
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Join Date: Jul 2010
Posts: 137 What Jeep do I drive?: JK
Likes: 29
Liked 13 Times in 9 Posts
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Quote:
Originally Posted by GPCDR
Hi, when we had the vehicle in for a recharge the mechanic investigated a leak to behind the dash. It leaks too fast to detect venting in service.
Does anyone know if the same evaporator is used arcoss all JKs as I can get a better price from the USA?
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How does it vent “too fast” to detect the leak? That should make it easier to detect. I reckon you need to take it to someone who can make a definitive diagnosis on the fault. I wouldn’t want to be paying someone to do the dash removal, if avoidable.
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28-03-2019
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Full Flexer
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Join Date: Jun 2017
Location: Central Vic
Posts: 797 What Jeep do I drive?: WG
Likes: 23
Liked 283 Times in 208 Posts
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A good hvac tech should put in dry nitrogen and identify the location of the leak.
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