Had an interesting set back this morning. On the way to a car show this morning, the coolanr overflow hose, where in plugs into the top aluminum coolant pipe came loose and disconnected. Obviously, I had a fun coolant mess to clean up. Not cool to pull into a car show with smoke coming from underneath the engine LOL.

I was able to reseat the hose, but feel as though it's not very secure. I plan to install a small hose clamp over it to prevent it from coming loose in the future, no big deal, just curious if anyone else has had this issue?

 

Not yet. Will check it - my mechanic told me the clamps that came with the metal pipers were XXXX and he replaced all of them with good clamps.... FYI. Forgot about this until you just jogged my memory as had a lot done in that service (thermostat, tubes, S/C stuff, water pump, etc., etc.).

Anyway, that may be your issue. He used top end clamps on my car (and I paid for them...).

 

I just had my pipes replaced recently and the mechanic replaced the overflow hoses as well because they were very brittle. I just checked and mine is securely clamped.

 

Oddly enough, I have driven it without issues until yesterday. It currently has a zip tie holding it in place, but plan to throw a standard hose clamp on it when I have time to get to the parts store this week.

 

I may put a zip tie on mine for peace of mind too. Glad you caught it!

 

Please post a photo.

 

I think this is the connection you are talking about. I wrapped mine in electrical tape and put a zip tie on it.

 

This ^^^ Exactly where my issue came from. Thanks @mcphill

 

here is a couple of quick pics of mine at the moment. I also zip tied it in place. I think I may get some adhesive lined, marine heat shrink and place a small cover over the connection too, to help hold it all together.

 

Heat gun to slightly adjust the clamp to sit more secure, along with zip tie and creative solution with some marine grade heat shrink to hold it all together and have a more OEM appearance. Let's see how this holds up.

 

Out of curiosity I just had a look at this connection on my car and there is a noticeable difference (besides plastic vs alloy!).
On my OEM plastic two-piece seam welded one the back edge of the nipple where the clip/prongs fit over and grab is much "sharper", deeper and more defined than that on the alloy version. Put another way, the alloy connector piece is much more curved and "slippery" looking and no wonder the hose tends to pop off.
If/when I get an alloy pipe I will file that area down a little so that it presents a nice sharp and defined edge for the prongs to grip behind.

 

Yes agreed. I actually took a Dremel and shaved down a slight groove into each side of the aluminum pipe to do the exact same thing, make it "snap" into place better. I am sure this has to do more with the mold used to create the pipe, but this design in general from JLR is ridiculous. I had purchased an extra coolant overflow hose when I replaced my coolant pipes for good measure. $20 was worth it to know that part was renewed as well. I pulled the old clip from the old hose along with a few other clamps/etc. in case I needed to adapt them into this setup.

One idea I had was to completely replace the 90-degree elbow setup with a small coolant line, with the bend already in place and just clamp together like a normal coolant line, but have it extend over the tip of the coolant outlet (if what I am saying makes sense). For now I will leave it as is, as I really do not think it will pop out again, but that is my plan if this does not work.

 

So does the design or casting for the aluminum part need to be adjusted? (Should we be sharing this info with the manufacturer so they can revise the part?)

 

I would assume with as many of these as they've sold, YMMV if this is even an issue. For me, I drove on it fine for almost a month, before this popped off. Probably because of a longer, more spirited run with higher coolant pressure. I think that with the revised design, it is possible this "clip" could click into place stronger, but honestly, it is a stupid design by JLR. Similar to the stupid design on the water pump elbow design. Not sure who to even share this with as most likely its made overseas and resold under many others "brands."