Water leak in HVAC box
#1
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Year: 1999
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Water leak in HVAC box
Well I've searched and can't come to a definite answer. My 99 XJ has a water leak that I noticed when replacing the blower motor resistor. A little water came out of the resistor location and I noticed a small line of water below the blower motor but that seal didn't feel soaked, just a little damp. However I have a leak getting into the HVAC box somewhere and just curious to what others have done to fix this the right way? It seems to be a common problem.
Thanks
Thanks
#2
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Seeing you are in Minnesota and it's November, jumping to AC might not be the first idea. Nonetheless water leaking on the right is often the drain for the AC plugged up. There is a tray in there with a tube that comes out the firewall in the neighborhood of the trans dipstick. If you find that and give it a careful shot of compressed air that might be that.
If you add "cowling leak" in your search you will find plenty. I use this "advanced search" > https://www.google.com/advanced_search?hl=en(include Cherokeeforum.com) in "with these words" if you want to look just here.
In my case on my old 90 it turned out to be the body putty where the right fender meets the firewall. I regret having butchered my cowling before I figured that out. Lesson I learned, if using a hose running to find the leak, give it a good while to see if that's the spot. (I had checked that seam, but turns out it took more than a couple of minutes to start dripping.)
If you add "cowling leak" in your search you will find plenty. I use this "advanced search" > https://www.google.com/advanced_search?hl=en(include Cherokeeforum.com) in "with these words" if you want to look just here.
In my case on my old 90 it turned out to be the body putty where the right fender meets the firewall. I regret having butchered my cowling before I figured that out. Lesson I learned, if using a hose running to find the leak, give it a good while to see if that's the spot. (I had checked that seam, but turns out it took more than a couple of minutes to start dripping.)
#3
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Originally Posted by DFlintstone
Seeing you are in Minnesota and it's November, jumping to AC might not be the first idea. Nonetheless water leaking on the right is often the drain for the AC plugged up. There is a tray in there with a tube that comes out the firewall in the neighborhood of the trans dipstick. If you find that and give it a careful shot of compressed air that might be that.
If you add "cowling leak" in your search you will find plenty. I use this "advanced search" > https://www.google.com/advanced_search?hl=en(include Cherokeeforum.com) in "with these words" if you want to look just here.
In my case on my old 90 it turned out to be the body putty where the right fender meets the firewall. I regret having butchered my cowling before I figured that out. Lesson I learned, if using a hose running to find the leak, give it a good while to see if that's the spot. (I had checked that seam, but turns out it took more than a couple of minutes to start dripping.)
If you add "cowling leak" in your search you will find plenty. I use this "advanced search" > https://www.google.com/advanced_search?hl=en(include Cherokeeforum.com) in "with these words" if you want to look just here.
In my case on my old 90 it turned out to be the body putty where the right fender meets the firewall. I regret having butchered my cowling before I figured that out. Lesson I learned, if using a hose running to find the leak, give it a good while to see if that's the spot. (I had checked that seam, but turns out it took more than a couple of minutes to start dripping.)
#4
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Do note that RTV, (silicone), might be nearly indestructible for decades, but might not stick, "adhere" so well. Great sandwiched under window trim, or for a gasket. Acrylic latex is water based and might adhere better, but needs to have dry for a while to cure...just a thought
#6
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Originally Posted by DFlintstone
.... And?
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i started here 3 months ago replacing rotted floors and fightoing leaks not easy to fix. check my threads. i got help from others. you need to check the pass carpet after a rainy day or run a hose onn the windshield.
i assure you it is not ez to get 100 % and wet carpets will rot your floor over time as you dont notice it till too late!!
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#8
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I lied.. the problem is still here. Had a heavy rain last night and I came out this morning to a rugged ridge floor mat full of water. I can see water droplets from the blower motor resistor.. I'm thinking it's probably the damn cowl leaking.
#10
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Originally Posted by nujeepguy
find my posts and others, its not ez to get 100%.
lift your pass mat to see rust, i could see thru!!
lift your pass mat to see rust, i could see thru!!
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I'm not positive, but I think lots of things might leak at the same place. Whats the harm in setting garden hose really low, and having it run around the blower seal for a good while? Easy enough to do free, and maybe could be "elucidating" .
#12
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Originally Posted by DFlintstone
I'm not positive, but I think lots of things might leak at the same place. Whats the harm in setting garden hose really low, and having it run around the blower seal for a good while? Easy enough to do free, and maybe could be "elucidating" .
#15
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Originally Posted by nujeepguy
you can go back 2 months and find my posts and flintstones who was a great help. lot of pix and info.
did i say its not ez???
did i say its not ez???