Trans cooler bypass?
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Trans cooler bypass?
Sooo I have an 03 navi thats leaking trans from the radiator. I'm not sure why the trans fluid is routed through here. BUT heres my plan, what if i chopped the line from the trans and the cooler. Then connected them with rubber trans hose and compression fittings?
I see no reason besides extra dealer parts for the cooler to pass through the radiator.
Input????
I see no reason besides extra dealer parts for the cooler to pass through the radiator.
Input????
Fleet Owner
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From: 0,0,1
You don't see any reason for tranny fluid to be cooled? Go ahead and eliminate that "unnecessary" cooler. If I were you though, I'd start putting $4K+ aside now for the replacement tranny.
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No no no..... I dont plan on eliminating the cooler. the trans cooler is in front of the radiator. There are hoses that go through the radiator to get to the trans cooler. I'm not to sure why they are routed this way.
I would like to route them under the radiator if its safe.
I would like to route them under the radiator if its safe.
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Ok so I've found that there is minor benifits to running through the radiator, and given the extreme temps I tend to live in. I have a new question, What part needs to be replaced. It looks like brass fittings going into the radiator. I tried to tighten them but they are already tight. If i grab the trans cooler lines and shake them where they meet the radiator there very loose.
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So the reson the hoses are leaking is because the radiator is bad?!? Sounds a little off to me?
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Fleet Owner
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You didn't say hoses were leaking in your first post, you said the radiator was leaking. We're not there you are, so in order for us to give sound advice we need you to accurately describe what's going on.
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Logistics Pro
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From: Central NYS
They are routed that way so that the coolers are in series.
Logistics Pro
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From: Central NYS
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the fitting is tight but the hose is free to swivel around a lot.
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From: The OC
So I'm guessing you have a leak at the fitting that threads into the radiator? And there is a threaded fitting on the flared line the threads into that fitting? There is no o-ring in there on my Expo, not sure about the Nav. Have you tried to tighten the fitting on the flared tube? Use 2 tools, one to hold the big fitting and one to turn the small fitting and see if that stops the leak. Spray it clean before you start the work to see if improved the problem.
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So I'm guessing you have a leak at the fitting that threads into the radiator? And there is a threaded fitting on the flared line the threads into that fitting? There is no o-ring in there on my Expo, not sure about the Nav. Have you tried to tighten the fitting on the flared tube? Use 2 tools, one to hold the big fitting and one to turn the small fitting and see if that stops the leak. Spray it clean before you start the work to see if improved the problem.
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In case anyone else has this problem I took the hoses off that go into the radiator and there was a very small orange color o-ring inside the brass fitting that the aux cooler hose ties into. I had to use a small mirror and a scribe to pull it out. No local parts store by me had a compatible o-ring. I'll be swinging by the dealer this week hopefully they have it.
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