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Old 11-15-2011, 10:29 AM   #1 (permalink)
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48re trans leak question

ok, to me this is kind of wierd but here's what happened. i started my truck yesterday and backed it out of my driveway. i saw something on the ground so i shut the truck off. i looked under it and there was a small puddle of trans fluid and it started dripping when i started the truck and there was a small trail of fluid. i got under it and it was coming from the inspection cover area. i pulled the cover off and it was wet up in the bell housing. i cleaned it all off with brake clean and started the truck back up. it didn't leak anymore. i drove the truck for appr. 40 miles and checked it every so often, no leak.
it's a suncoast trans with a suncoast converter. the trans has been in the truck for a few thousand miles and its never done this before. has this ever happened to anyone? i supposed to drive the truck to PA from TX in Jan. and i'm nervous about this. thank you for anyone's input.
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Old 11-15-2011, 10:35 AM   #2 (permalink)
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Are you sure it was transmission fluid and not antifreeze? Sounds more like a cold water leak to me. That little hose behind the turbo will leak and drip off the trans bell housing. The extended life coolant is close to the same color as trans fluid.
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Old 11-15-2011, 10:47 AM   #3 (permalink)
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i was reading about that and i looked at that hose from the top and bottom and didn't see any evidence of a leak. does that antifreeze feel slick like trans fluid? when i wiped it out of the bell housing with my finger it felt like oil but i could be wrong. also, the drips it made in the driveway seemed to go away pretty quick and if it was oil i wouldn't expect it to soak in to the concrete that quick. i'm going to look at it again with a pressure tester on the cooling system and see if i can't get it to leak. thanks for the response DmaxEter, i'll check that again.
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Old 11-15-2011, 11:03 AM   #4 (permalink)
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Is your drive flat? do you ever have any converter drain back? Here any sloshing on startup?
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Old 11-15-2011, 11:06 AM   #5 (permalink)
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I agree with gentleman above there's a small piece of hose by manifold that tends to come loose get a 1/4 inch nut drive and tighten the two hose clamps there and coolant does have an oil feel to it, also red in color... Look and see if it's wet around that piece of hose this happened to me like two weeks ago no more leak and I thought it was the transmission as well


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Old 11-15-2011, 03:10 PM   #6 (permalink)
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well i pressurized the cooling system and there were no leaks and the pressure held. also, the little hose by the manifold on my engine has the clamps that squeeze with spring pressure, not the screw type. i looked at the hose pretty close and didnt see any leak.
my driveway is flat so im not sure about the converter drain back. i probably wouldnt be able to hear any sloshing, the airdog kind of drowns out any abnormal sounds lol.
this thing didn't leak at all until the engine was started and hasnt leaked since. trans fluid level is still normal and coolant is normal. maybe im going crazy! lol
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Old 11-15-2011, 03:28 PM   #7 (permalink)
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only thing I could think of is that if for some reason your converter did drain back, it will fill the pan up more than usual and the weep hole in the pump cover will cause some fluid to escape. once running the converter will fill back up causing the level in the pan to drop and not leak any more. Thats my only guess, if it is indeed trans fluid on the drive.
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Old 11-15-2011, 05:47 PM   #8 (permalink)
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Make sure you pressure test it when its COLD. Not after its sat in the driveway for a few hours but cold. Park it one afternoon and pressure test it the next morning.

When that hose leaked on mine the coolant level showed no change or not enough to worry about. I was out of town so it leaked every morning for 4 mornings. There was a puddle about 12 inches in diameter under the truck when I came out to it every morning.
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Old 11-29-2011, 12:02 AM   #9 (permalink)
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it happened again today. it is for sure transmission fluid. it only leaks for a few seconds on start up and then its fine. my question is, what causes the converter to drain back and how can i stop it? it is parked on a level driveway. my trans fluid is still right where its supposed to be. it hasn't really leaked enough to make a big difference on the stick.
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Old 11-29-2011, 08:46 AM   #10 (permalink)
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There are a couple seals on the converter hub area that when they leak the fluid will drain out of the converter and back into the pan/VB area. This happens because the height of the converter is higher than the level in the pan and when those seals start to leak, the fluid column that would normally be held in by the seal leaks and allows air from that area to fill the space instead.
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Old 11-29-2011, 10:40 AM   #11 (permalink)
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i just had the converter refreshed at suncoast this past August. should i call them and see if they'll fix it? is it something they did?
i appreciate the response, thank you for your help shibbyutman
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Old 11-29-2011, 12:51 PM   #12 (permalink)
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Definitely. I'm not 100% positive, but I believe the seals that interface it in should be replaced every time it is removed. I think its worth a phone call. If you had it done at a reputable shop they should stand by their work.
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