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Coolant hose leak

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Old 06-10-2018, 04:51 PM
Krapfl
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Coolant hose leak


Hi,

I’ve had a persistent small coolant/antifreeze leak in my 93’ Aerostar Eddie Bauer edition v6. Recently replaced the radiator. In conjunction, found a portion of hose leading to the water pump with a small leak...it was near the end of the hose and I was able to cutoff the last inch or so with the leak and reconnect to fix that leak.

Now, after doing all that, have found another leak in the hose behind the alternator/tensioner. This hose is part of a larger, branching hose that appears to snake all around the engine (picture attached with red lines on hose with leak) so I’m looking at it as a probable pain the replace the entire thing. Anyone have experience patching something like this...maybe getting another section of hose and covering/sealing with hose clamps/tape? Anyone with experience think a patch like this will work (other suggestions welcome)? The leak is on the lower portion of this hose so I’m thinking I’ll need to pull the alternator to get to it...

OR, anyone with experience replacing the entire hosing system have an idea of how much of a pain this would be?

Thanks!
 
  #2  
Old 06-11-2018, 04:21 PM
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I don't recognize your setup in the pic? Different alternator and my lines on my 92 3.0 do not run back, Only over to the evap box.??
Is it a 4.0 engine?
 
  #3  
Old 06-11-2018, 04:37 PM
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Yes it is a 4.0 engine.
 
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Old 06-12-2018, 08:50 AM
87&97Aerostrar
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Best would be to replace the entire hose. Two leaks already sounds like hose is deteriorating.
But you can try splicing it using a couple of worm clamps and one of these. If there is enough room.
 
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Old 06-12-2018, 08:47 PM
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What was said earlier. A hose that has multiple leaks already is deteriorating and is not worth patching. You can try. Any splice connections should be brass, there are plastic ones, but I've had terrible results with plastic.
 
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Old 06-12-2018, 09:58 PM
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Originally Posted by KhanTyranitar View Post
What was said earlier. A hose that has multiple leaks already is deteriorating and is not worth patching. You can try. Any splice connections should be brass, there are plastic ones, but I've had terrible results with plastic.
I agree, patching is not optimal....but its also not a daily commuter so maybe it would hold up??

Anyone with experience know what the replacement job would entail? Seems there is potentially a lot of nooks and crannies that the hose snakes around that might require a lot of removing of parts to get to....but maybe not. That also wouldnt be the end of the world but Id like to know what Im in for before I start the job.

If someone whos done this before has an idea of the time and effort it might take Id be very thankful!
 
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Old 06-13-2018, 12:31 AM
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On further inspection, this wouldn’t be a bad job if I could find the part (part has 3D17A printed on it). Goes from metal radiator hose and splits (one side to the portion of hose with the pinhole as indicated in the pic, other side to firewall on passenger side of engine compartment). This is the same problem identified in this previous post (https://www.ford-trucks.com/forums/1...formation.html).

Wouldn’t be a bad job to replace the whole thing if I could find the part, but I only see it one place for $65, which seems excessive (https://www.google.com/shopping/product/1?q=ford+aerostar+coolant+hose+3d17A&client=safari &sa=X&hl=en-us&biw=1024&bih=666&tbs=vw:l,ss:44&prmd=sivn&prds= num:1,epd408718641729121201,paur:ClkAsKraX2pobA7 qGzRZErMUMOqqzkXwdhf1rSa-rBRrVtbFrNczfPRLSqGgggzrtGGtawt_bb0DGqOfMaIatP8V6G kx_YHpdJvsDd1bFzHq1P39GLWD5xTaoBIZAFPVH71KZCQbM37B 7t4uiWSh2Yfjde27AQ,pid408718641729121201,cs:1&ve d=0ahUKEwj7-PrV3s_bAhXhIpoKHak0BpYQgjYIzwQ). Anyone know if it can be found cheaper?

Otherwise, next step might be to pull off the alternator to get room to check if there’s enough slack to cut off the hole and re-attach. Or try the splicing...or other jerry-rigging techniques from the previous post.

Thanks!


 
  #8  
Old 06-13-2018, 02:06 AM
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If you're ordering replacements, de sure to get the hose for the exact year of your van. Different years had different bends at different parts of the hoes.
 
  #9  
Old 06-14-2018, 11:15 PM
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It looks like you are looking for this


PN: F29Z 18472-A rb F29Z 18472-AA which is obsolete, but when it was still available it ran $197.40. I am not seeing anything available aftermarket so it looks like you are going to have to custom make something.
 
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Old 06-14-2018, 11:20 PM
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Another option is take it into a parts store or shop that makes Heater hoses and see if they can copy the old one.
 
  #11  
Old 06-21-2018, 08:17 PM
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I got some aluminum 5/8" splicers at autozone years ago to get rid of those hose connectors which were leaking.

Haven't had any problem last 4 years.
 
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Old 06-22-2018, 01:34 AM
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I replaced a couple of those slip-fit connectors with some standard hoses. Nipple ends that slip into the connectors are just long enough to slip a regular hose end over, and put a clamp around. The problem I ran into was that the nipple on the other end was slightly bigger, requiring the next size of standard hose. So I had to find an adapter, and use a short section of the next size hose.
 
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Old 07-12-2018, 12:12 PM
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Thought I’d update that I ended up fixing this. Bought the coolant line for the 3.0 engine I linked to above. It fit well, except there was a recessed on one of the fittings....I was able to cut that section off and get it to fit snug. I’ve been driving it for a few weeks now with no issues. Thanks so much for everyone’s help!
 
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Old 01-11-2019, 11:27 AM
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Originally Posted by 93nighthawk View Post
It looks like you are looking for this


PN: F29Z 18472-A rb F29Z 18472-AA which is obsolete, but when it was still available it ran $197.40. I am not seeing anything available aftermarket so it looks like you are going to have to custom make something.
There are two similar looking hoses, one splits the hot water from the pump to the heater matrix and one combines the return water back to the block. I am not clear as to which of the numbers you quote is which. I can find F29Z 18472-AA on the net at $155.00 but F29Z 18472-A is only $9.95, so I'm guessing that F29Z 18472-AA is one of the long 'T' hoses, and that F29Z 18472-A is a clamp or end fitting(?). Can you please clarify which the two large 't' hoses are and their respective part numbers. I really would appreciate your help. Thank you!
 
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Old 01-11-2019, 03:26 PM
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The lettering I have on my line I replaced is “69H-18C-266-JA”...which doesn’t seem to correspond with yours. If you’re looking to the passenger side of the engine, the two hoses go into the firewall...I replaced the bottom one, which looks to correspond to the hose you’ve got in the picture on your post. I found what looked to be the right part on ebay, and lucked out because it in fact was. Hope this helps?
 

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