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Old 11-08-2016, 07:57 PM   #1
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Trans Oil Leak Coming From Oil Cooler Front Of Radiator

I just supposedly had a leak coming from the oil cooler in front of the radiator fixed. They replaced an O-Ring. I still have a tiny drip. I cleaned things real good in case it was residue... Appears something is still barely leaking (parked.) Anybody had issues with a leaking trans oil cooler?

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Old 11-09-2016, 12:30 PM   #2
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You could take it back to the garage that 'fixed' the leak, maybe just a snugging down of the fitting will solve the drip.
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Old 11-09-2016, 06:16 PM   #3
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Trans Cooler Leak

I am taking it back after my front seats are back from the upholstery shop. Everything I checked seems tight. And I don't see where it's coming from. I was just trolling for info to see if this is a common issue.
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Old 11-09-2016, 07:39 PM   #4
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Strange that this issue came up. I have had a complete engine rebuild (will post more on that later, now have an 8.2 liter engine with Banks Torquetube headers) and had two engine oil leaks. One was a loose plug on the driver's side head, that is probably an additional instrument port. The other was on the connector at the transmission for the engine oil cooler lines. These two are repaired, but am sensitive to any spots on the concrete. I just noticed a fresh spot, and it appears to be from the transmission oil cooler lines. But it is in a bend in the lines, and no oil on either side, so I am afraid the lines have rubbed together, and one of them is worn through. Will have to take line attachment loose and spread the lines apart to tell. Have other projects going, so will be several days before I do this. In the meantime, I have cleaned the lines well, and will see if fresh oil shows up.
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Old 01-07-2017, 01:43 PM   #5
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The trans cooler on my 2002 leaked a couple of years ago with the same result you initially had. The mechanic replaced the o-rings.

This last Aug 2016 my fuel pump went out, I was miles down the road from home and knew I had a mist type oil leak somewhere. The where turned up ultimately as a big puddle of trans oil on the parking lot at the shop where the fuel pump was replaced.

The trans cooler itself failed. It appears that it "rusted" out. So, I received a new fuel pump and a new trans oil cooler and, sadly, totally pinched closed fuel line from the fuel tank to the gas generator. sigh.
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Old 01-07-2017, 02:51 PM   #6
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Quote:
Originally Posted by ricklsmith53 View Post
I just supposedly had a leak coming from the oil cooler in front of the radiator fixed. They replaced an O-Ring. I still have a tiny drip. I cleaned things real good in case it was residue... Appears something is still barely leaking (parked.) Anybody had issues with a leaking trans oil cooler?
Best recommendation here is to take it back to the shop; I agree. I went through this in spring 2016, new cooler - no runs, drips or errors.
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Old 01-07-2017, 05:41 PM   #7
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Best recommendation here is to take it back to the shop; I agree. I went through this in spring 2016, new cooler - no runs, drips or errors.
And I ask you again DriVer, What haven't you replaced.
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Old 01-07-2017, 07:38 PM   #8
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Oil cooler 'O' rings

Replaced them a couple of years ago. Seems to be fairly common.
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Old 01-07-2017, 08:40 PM   #9
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And I ask you again DriVer, What haven't you replaced.
One of these days I'll get around to doing the "Owner Registry" however I'll probably run out of room.
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