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Found my coolant leak
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dawgn86



Joined: 22 Jul 2011
Posts: 353
Location: Athens, GA.

PostPosted: Fri Sep 09, 2011 4:57 am    Post subject: Reply with quote

My 2006 Path has the rear A/C..I crawled under it last night and saw those lines and the clamps...mine looked good though..but now its something Im going to worry about as well
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khaosduke



Joined: 07 Feb 2011
Posts: 54

PostPosted: Thu Feb 09, 2012 1:49 pm    Post subject: Reply with quote

I'm going to have to do the same thing, do you guys know the type and size of the tubing used for this fix? Thanks!
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khaosduke



Joined: 07 Feb 2011
Posts: 54

PostPosted: Fri Feb 10, 2012 11:09 am    Post subject: Reply with quote

Got some 5/8 inch heater hose and clamps. Going to cut the pipe today and replace a section of the line with the heater hose. Hopefully with post with the results!
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mbiasotti



Joined: 18 Apr 2013
Posts: 2
Location: San Jose CA

PostPosted: Thu Apr 18, 2013 3:18 pm    Post subject: rear coolant leak Reply with quote

First time poster. I have a 2005 Pathfinder and this problem just happened to me. It is no surprise either since approx. 5 years of it's life was back in Massachusetts (where they salt and sand the roads in the winter.)
Anyway, I read the posts here and decided instead of the enormous amount of labor to replace the entire line that I would try the cut and patch method. Actually, the rest of the 11' lines going forward to the engine compartment are in good shape given that they are well protected from the road because they are on the topside of the frame. It is just this one area in the rear where they decided to put the rubber strap that failed - due to the theory that many of you have suggested. Being an engineer, its easy to see why this potential design flaw could have gone unnoticed given that it would take 50K of miles to discover it. Aluminum is a good choice but yes, they should have designed a different boot for his area or a more slim and loosely fitting strap.
My question to the group is that this is just a radiator coolant line and return line right?
Anyway I cut the affected areas and then replaced with heavy duty 1/2 I.D. hose and hose clamps. I just did this but have no idea whether it will go the distance and whether this is a good solution.
Following is a before and after picture. The first is with the rubber strap removed showing the areas that are corroded thru and the second is the solution that I applied.
http://www.flickr.com/photos/12634107@N03/8662020330/in/photostream
http://www.flickr.com/photos/12634107@N03/8662020976/in/photostream
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smj999smj
Moderator


Joined: 22 Jan 2012
Posts: 4790
Location: Prospect, VA

PostPosted: Thu Apr 18, 2013 6:17 pm    Post subject: Reply with quote

It's actually coolant lines for the rear heater core. There are several repair kits on the market to repair these lines more "professionally." Dorman Products makes such a kit. The heater hose will work; my only concern would be how close it is to the exhaust pipe.
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2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
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mbiasotti



Joined: 18 Apr 2013
Posts: 2
Location: San Jose CA

PostPosted: Fri Apr 19, 2013 8:17 am    Post subject: Reply with quote

smj999smj wrote:
It's actually coolant lines for the rear heater core. There are several repair kits on the market to repair these lines more "professionally." Dorman Products makes such a kit. The heater hose will work; my only concern would be how close it is to the exhaust pipe.


Hello - yes I'm concerned about that too (heat from exhaust) but they are not too close. Can you post the URL for that Dorman product?

thanks

Mark
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smj999smj
Moderator


Joined: 22 Jan 2012
Posts: 4790
Location: Prospect, VA

PostPosted: Fri Apr 19, 2013 5:08 pm    Post subject: Reply with quote

Dorman 800-600:


http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CDMQFjAA&url=http%3A%2F%2Fwww.dormanproducts.com%2Fdocuments4rb%2F2009ss%2F2800012_800-600AC_LineRepairKit.pdf&ei=GOpxUZWKGMzJ0AHc4IHYBA&usg=AFQjCNFh0QL-vc6Ay6w92dxG17Z8aeeXWg&sig2=YBRfbmqut4-FG7LSMguICw&bvm=bv.45512109,d.dmQ
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2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
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Cliff_Jumper



Joined: 03 Dec 2008
Posts: 41
Location: Maryland

PostPosted: Mon Apr 07, 2014 10:58 am    Post subject: I gave up... Reply with quote

I tried fixing the leak over the weekend and was able to fix the lines near the exhaust. However, during that process the one on top of the spring perch started leaking as well.

That one is a little harder to do, so I had the dealer fix it for $800! Evil or Very Mad

On top of that, the whining noise (timing chain guide) is getting worse. I think it's time for a trade in and it will not be another Nissan.
_________________
2005 Storm Gray Pathfinder SE
"Completely Stock" with 70K miles
Replaced so far:
2 tensioner and 2 belts
1 fuel sending unit
Radiator
clutch fan
rusted brake rotors and pads
U-Joints (front drive shaft)
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b7evan



Joined: 29 Aug 2017
Posts: 3

PostPosted: Mon May 07, 2018 1:44 pm    Post subject: coolant lines for the rear heater core? Reply with quote

Hi all

Just checked under my 05 r51 Pathy to find what looks like the rear coolant or AC lines bypassed with rubber hose.

Can anyone confirm??

Cheers

https://ibb.co/k2ipg7
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smj999smj
Moderator


Joined: 22 Jan 2012
Posts: 4790
Location: Prospect, VA

PostPosted: Tue May 08, 2018 11:34 am    Post subject: Reply with quote

Yes, that's what it looks like, and it should be the coolant lines. The rear A/C lines run behind the interior side panel on the right side. Normally, if just the lines are leaking, you can repair the sections with rubber hose (although fixing them properly using an aluminum pipe section is the preferred way due to how close the exhaust is to the lines) and still run the rear heater, but, I'm wondering if they did this because the rear heater core is leaking, possibly?
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2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
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b7evan



Joined: 29 Aug 2017
Posts: 3

PostPosted: Tue May 15, 2018 9:56 am    Post subject: Reply with quote

smj999smj wrote:
Yes, that's what it looks like, and it should be the coolant lines. The rear A/C lines run behind the interior side panel on the right side. Normally, if just the lines are leaking, you can repair the sections with rubber hose (although fixing them properly using an aluminum pipe section is the preferred way due to how close the exhaust is to the lines) and still run the rear heater, but, I'm wondering if they did this because the rear heater core is leaking, possibly?


Would make sense as the heater does not seem to work in the rear of vehicle.
Question
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