Leaking Trans cooling lines at radiator

[prsdrat]

Does anyone happen to have a picture or exploded image of the transmission
cooling lines where they attach to the radiator? PO had the radiator
replaced and the upper is misaligned and the lower is leaking. Since
I have no experience with these damned plastic tanks I'm hesitant to
just crank on the fitting. This fitting appears to be some sort of chassis
mount in the tank with a tubing fitting (compression or flare?) screwed
onto it. Can anyone enlighten or point me?

Thanks.

[Z28jeep]

I have the same issue! Trans lines leaking at radiator. I hear this is a common problem because of the fitting when fluid gets hot then cools off it creates a leak. Anyone else have this issue?

[2005JGC]

EDIT: this comment is for WK jeep not the OP's WJ

There is a separate trans cooler that these fasten into, its not internal to the radiator actually its a unit that is combine with the A/C condenser. I have replaced a leaking trans cooler/condensor before and if your leaking from behind the grill I would lean towards this, unless the lines are damaged they are typically going to either dump (leaving you on the side of the road) or they are not going to leak. The cooler lines are VERY common but at the rubber portion at the compression fittings in the engine compartment.

[Ypahihi]

Is this an expensive or complicated repair?
I also have what sounds like a fine leak where I can hear it but not physically detect it. Having replaced my radiator late last year, it kind of has me on eadge a bit.

[2005JGC]

sorry, looking back i need to edit my post, it was actually directed at z28jeep as he has a WK...

The trans cooler IS internal to the radiator on the WJ. What sound does a leak make?

[Chaoul1]

Mines leaking too. I need to replace them.

[Ypahihi]

It's a hiss type sound. Like a steam leak.

[Fourbynut]

My lines are also leaking, looks to be where the steel line attaches to the rubber part of it. Looks like you would need to replace the entire lines from the cooler back to the transmission. I'm guessing this would be a dealer only replacement item. Anyone have any idea if this is so? :confused: (By dealer only meaning you would have to purchase the replacement lines from the dealer.)

[Bleeding Blue]

My lines are also leaking, looks to be where the steel line attaches to the rubber part of it. Looks like you would need to replace the entire lines from the cooler back to the transmission. I'm guessing this would be a dealer only replacement item. Anyone have any idea if this is so? :confused: (By dealer only meaning you would have to purchase the replacement lines from the dealer.)

I would check rock auto

[2005JGC]

I would check rock auto

The lines are maybe 50 bucks from the dealer (my employee pricing was like 32)

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[Fourbynut]

Thanks for the response guys, I did not think of RockAuto but I want the replacement item to match the factory shape. If they dont have anything I will definately pick up some from the dealer. I still have an extended warranty, hmm I wonder if it would cover the replacement. I will have to check that out also.

[Z28jeep]

Yes they are leaking at the compression fittings in the engine compartment. I found a guy who made his own fix. He cut the fittings off and reconnected the hoses with regular hose clamps and he said they have been dry for a year now. I can't find the post anywhere now. I notice they leak only when it's cold out, figure the fitings expand when warm and then contract when cold outside. Noticed when it's warmer out(45-50deg) I don't have a drop under the Jeep. I just check the level once a week until i get time to fix it.

[Fourbynut]

Yea I thought of the cut and clamp fix but not sure I want to go that route. I like the idea of keeping it factory looking.

[Z28jeep]

Im not too concerned about the look of it. Just want the leak to stop.

[wkedbear]

I did the cut and clamp. I thought about replacing the whole line, but I didn't want to have to remove the y-pipe to get to the trans side of the lines. I have the Hemi, so I don't know if the 4.7 is exactly the same. I just disconnected the radiator side and used a Dremel to cut the clamps, then put power steering hose on (b/c o'riellys was out of trans line, but power steering was very similar) and put two clamps on each end to be on the safe side. It's only been that wasy about a week now, but no more leaks.

[Z28jeep]

Hope it holds up because that is the route im going.

[2005JGC]

You dont need to remove the Y pipe, although it may make it REALLY easy, the time to remove the pipe, disconnect or remove all the o2 sensors from the pipe and get it back installed that is actually a very small part of the job to get hung up on to take the time to pull that out... It is NOT easy on a hemi, on the 4.7 its still not super easy but I personally remove the fan shroud and mechanical fan, this doesnt make them just drop in but it helps considerably and with the right tools takes about 5 minutes to remove and install those parts.

[Fourbynut]

Just ordered replacement lines from the dealer, should be in Tuesday. Then just to set aside the time to tackle this. Thanks for the tip 2005JGC.

[Fourbynut]

Just to let anyone know if you replace the factory lines you will need a special tool to remove the lines as they have spring loaded retainers holding them on. The tool is (8875A) They seem to sell for the $65-80 range. Does anyone know where to purchase this cheaper or know of another way to remove the fittings?

[2005JGC]

no you dont need the special tool, infact I rarely use the tool because even with it I have found myself fighting them. With a pick tool you can pull the spring retainer (i call it an E clip) out. its small and if your not careful it will fly to mars and/or I have seen guys stretch them out (not really sure how but they do) so you may want to talk to the dealer about getting 3 or 4 extras just to have on hand. once you get them out, jiggle the lines out of the fittings, then you can reinstall the clip into the fitting, now when you go back together you just press the line into the fitting until it snaps.

[Escape]

^X2

[Fourbynut]

Thanks for the tip....