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Discussion Starter · #1 · (Edited)
I guess its inevitable, on a 2006 Commander w/ 3.7L V6, for hoses to start going. I've seen a previous posting about changing the hose, but how do you tell which hose it is, since the two hoses look identical. I found hoses at AutoZone, Continental brand, but they list two hoses.... one is 29.99 and the other is 75.99.


going by .what I can see, I think I need the 29.99 one since the old one has the metal heat shield on it. I guess the best way I can describe, I need to fix the "driver" side one, not the "passenger" side one.

are there differences in diameter?? they look the same in the car

thanks for any info

on a side not while I was looking around in the engine compartment, I found what was left of a flat braided copper ground wire that wasn't connected anymore to the firewall right above where the hoses in question are. I didn't see anything in the book on a firewall ground
 

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I guess its inevitable, on a 2006 Commander w/ 3.7L V6, for hoses to start going. I've seen a previous posting about changing the hose, but how do you tell which hose it is, since the two hoses look identical. I found hoses at AutoZone, Continental brand, but they list two hoses.... one is 29.99 and the other is 75.99.


going by .what I can see, I think I need the 29.99 one since the old one has the metal heat shield on it. I guess the best way I can describe, I need to fix the "driver" side one, not the "passenger" side one.

are there differences in diameter?? they look the same in the car

thanks for any info

on a side not while I was looking around in the engine compartment, I found what was left of a flat braided copper ground wire that wasn't connected anymore to the firewall right above where the hoses in question are. I didn't see anything in the book on a firewall ground
@Tmarkreis ;

With tax, it's only about $110.00.

You're talking about an SUV that's almost 16 yrs old; Replace both hoses and be done with it.

Then you don't have to worry about whether you replaced the right one or not.
 

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I guess its inevitable, on a 2006 Commander w/ 3.7L V6, for hoses to start going. I've seen a previous posting about changing the hose, but how do you tell which hose it is, since the two hoses look identical. I found hoses at AutoZone, Continental brand, but they list two hoses.... one is 29.99 and the other is 75.99.


going by .what I can see, I think I need the 29.99 one since the old one has the metal heat shield on it. I guess the best way I can describe, I need to fix the "driver" side one, not the "passenger" side one.

are there differences in diameter?? they look the same in the car

thanks for any info

on a side not while I was looking around in the engine compartment, I found what was left of a flat braided copper ground wire that wasn't connected anymore to the firewall right above where the hoses in question are. I didn't see anything in the book on a firewall ground


Are you sure it's a hose, or is it the dreaded plastic t-fitting? If it's a cracked t-fitting, the hoses can be (re)used.

My driver side t-fitting is cracked and spilling a bit of fluid. I bought the fix... just waiting for the weather here in FLA to chill a bit before I tackle that project.

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Discussion Starter · #4 ·
pretty sure its the T connector that's leaking.... is this a better easier fix?? that's a 3/4" connector, correct?? I'm working on the V6, I've read the V8 is a lot worse to work on.

Are there any tips or tricks for getting all the air out of the lines when I'm done??? I'm assuming the overflow tank takes care of that, from what I've read. just wondering if there was anything else I needed to do.
 

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pretty sure its the T connector that's leaking.... is this a better easier fix?? that's a 3/4" connector, correct?? I'm working on the V6, I've read the V8 is a lot worse to work on.

Are there any tips or tricks for getting all the air out of the lines when I'm done??? I'm assuming the overflow tank takes care of that, from what I've read. just wondering if there was anything else I needed to do.
You should have a lot more room to work with the 3.7L V-6.
 

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Discussion Starter · #6 ·
so I finally got the heater hose replaced....
Now, is there a trick to getting the air out of the line or is it something that just takes time?? I've run it twice for 15-20 min, enough for the engine to heat up and I'm still getting cool air in the front and the back. The supply line, which is the one I replaced, is hot but the return line isn't. I'm assuming air in the line. I am getting air bubbles in the expansion tank, so I figure it is doing its thing
 

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Are you sure it's a hose, or is it the dreaded plastic t-fitting? If it's a cracked t-fitting, the hoses can be (re)used.

My driver side t-fitting is cracked and spilling a bit of fluid. I bought the fix... just waiting for the weather here in FLA to chill a bit before I tackle that project.
Where did you score those T-Fittings? I need some for mine… think they might be cracked… it’s bleeding from the T.. hoses might be reusable. Any idea if they sell colored hoses?

Lol is that just a T fittings from like Home Depot?
 

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Where did you score those T-Fittings? I need some for mine… think they might be cracked… it’s bleeding from the T.. hoses might be reusable. Any idea if they sell colored hoses?

Lol is that just a T fittings from like Home Depot?

I found the t-fitting on Amazon for 8$ I think. Not sure about the hoses, but you could probably find them on Amazon/Ebay also.
 

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Would you happen to know IF the sizes are the same in the 5.7l hemi? I would imagine that the ac components would be the same in all models of the commander but I could be wrong.
For my 06 hemi, the size is 3/4".
 

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For my 06 hemi, the size is 3/4".
3/4” in all three sides? I thought middle piece was smaller? So crimp all three hoses with at the point the original plastic T starts and cut there. Then fit the hoses over new T and tighten with screw clamps? I just had a new radiator installed and flush the system n filled with new coolant and then this happened. Lol
Automotive tire Motor vehicle Bumper Automotive exhaust Automotive exterior
 

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Take a look as this:


This is the thread that helped me.
 

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so I finally got the heater hose replaced....
Now, is there a trick to getting the air out of the line or is it something that just takes time?? I've run it twice for 15-20 min, enough for the engine to heat up and I'm still getting cool air in the front and the back. The supply line, which is the one I replaced, is hot but the return line isn't. I'm assuming air in the line. I am getting air bubbles in the expansion tank, so I figure it is doing its thing
If there is air trapped in front of the thermostat it could keep it from opening which would keep the hot water from flowing through the system.

what engine do you have? On the 5.7 and my old 4.7 there is a bleed screw (plug) on top of the thermostat housing which is on top of the water pump. You are supposed to pull that while you fill through the radiator until it starts to overflow from the port. On my WJ the bleed plug was seized so I had to "burp" the system over a couple of hours of heating up and cooling down, then checking and topping off over the next few days.
 

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Are you sure it's a hose, or is it the dreaded plastic t-fitting? If it's a cracked t-fitting, the hoses can be (re)used.

My driver side t-fitting is cracked and spilling a bit of fluid. I bought the fix... just waiting for the weather here in FLA to chill a bit before I tackle that project.

View attachment 43061
My commander just started leaking from the same side tee as yours, as soon as I started using the rear heater, so I bought two 3/4" brass tees and hose clamps and reused the hoses, cost about $20. I cut the original tees at the clamp rings using a cutting disc on my Dremel. I cut each almost all the way then pried the rings off. I did not cut the hoses because then I would have had a harder time fitting it all back together. I replaced both tees because I figured that if one went bad then the other could go bad soon too and it would be easier to work on the leaking hose if the other tee was out of the way. I am glad that I did replace both tees as they both had gotten very brittle and the ends of most of the barbs came out in pieces, I had to fish several pieces out of the hoses (hope I got them all). One thing that I did to make the job easier was to remove the hood struts and prop up the hood with a 2 X 2 it gave a little more elbow room.
 
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