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Old 03-24-2011, 09:28 PM   #1
matt88
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Default Transmission cooling line leak? 2000 SL1 170k


So, I'm leaking what seems to be trany fluid from right by the radiator on the drivers side. Upon investigation it seems to be coming from the metal fitting which is attached to the bottom of the 2 hoses on the drivers side of the radiator. (I pulled the stone guard off and ran the car - got a couple red/pink drips right from the corroded section)

I haven't really had a chance to dive in but I'm pretty sure that these 2 lines are the TO and FROM the transmission...sound right? Call me a fool but I didn't realize that the trany fluid was cooled in the radiator.

I went into the parts shop and asked for the part but they didn't carry it. I am thinking the dealer next.

Am I on the right track?


Last edited by matt88; 03-24-2011 at 09:29 PM.. Reason: spelling
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Old 03-25-2011, 02:49 PM   #2
hoseppi
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You are on the right track. That bottom fitting is notorious for rusting out. If you can't find one let me know, I have at least 1 spare.
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Old 03-27-2011, 09:54 PM   #3
matt88
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thanks

sounds like the dealer by me has some stock. they sell the fitting without the hose. is it difficult to connect the new fitting to the old hose?

I am a little worried the fitting may not come off the radiator too easily, I ll soak it in some wd-40 before hand.

Should I drain the trany fluid before hand?
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Old 03-28-2011, 12:02 AM   #4
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There is a seperate fitting in the trans that the cooler hoses go into. The hose has no seperate fitting on the rad side, it threads into the rad.
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Old 03-28-2011, 01:16 PM   #5
hoseppi
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You wont need to drain the tranny, but you will need to catch the fluid that comes out of the cooler and lines. It's a quick connect at the tranny side (you need to push in and squeeze the two tabs together to remove). I guess the new fitting will come with a hose clamp so you can attach it to the old hose. I've always replaced the whole hose assy (mainly because I have a junkyard with plenty of spare parts- as tight as I am, if I had to buy anything, you know I would take the less expensive route).
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Old 03-30-2011, 08:47 PM   #6
matt88
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having a little trouble with the quick connect on the transmission side - is it a pinch and pull?

nut on the radiator side doesnt want to come off, sprayed it down with wd 40
hoping another try tomorrow might do it
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Old 03-31-2011, 12:13 PM   #7
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Sometimes it works better if you push it in a little, pinch, and then pull. You should be able to feel it release. It is an 'o'ring seal.
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Old 04-01-2011, 11:40 PM   #8
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thanks, a lot of pulling and squeezing and its off
my fault, but I broke the plastic clip
do you think those are the sort of thing the parts store will stock?
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Old 04-02-2011, 02:58 PM   #9
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I have a couple of spares if you still need one. I'll send you the complete bottom hose. Let me know.
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Old 04-02-2011, 05:05 PM   #10
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I appreciate it, Can Tire was able to help me out with the clip.
I got the hose at the dealer for 30 bucks (steep, I know but saved time).
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