Truck Pissing Fluid

Hey Tundra forum. This is my first post but I have been lurking around since I bought the truck and learning alot.

The truck
2005 Tundra 4x4 4.7L
145xxx miles
I bought it just about 2000 miles ago, knowing that i could smell coolant and I needed to do the timing and Water pump.

So... Just finished up doing the Timing belt and Water Pump plus Pulleys and o-rings from the Aisin Kit, and Oil Change.
I "thought" I had a small leak that turned into a big leak the day before i got the parts. I thought this would fix my issue but i was mistaken on where the "other fluid" was coming from.
Overall, T belt and pump went well and the truck fired right back up no problem.

But the truck is still pissing liquid out and now that I've crossed the water pump leak off the list and leaned up that mess i can really pinpoint this next leak. (see video)
I attached a photo. It's coming out of the sides of the Bellhousing. I'm thinking this is a problem with the

A) Freeze Plug in the back of the motor/bellhousing area.
B) Tranny fluid has breached a seal in the bell, tranny fluid cooler? Torque converter?
C) I have no idea ??? thats why im here haha

How can I post a Video here as well?
Thanks Homies.

 

Is it for sure coming from the bell housing or perhaps from those transmission cooler lines in the picture? Maybe a pin hole spraying at the bell housing?

 

Select the media button and input URL to video.

 

https://youtube.com/shorts/GwHsu-BxVbQ?feature=share


Texas Seth.

here’s the video I had to pop it on YouTube to get it to load. Hard to see but yes it squirts out of the hole ABOVE the hardlines. Only when the truck is started is it squirting, obviously pressured.

 

I'm gonna guess it's the coolant crossover in the rear of the block based on the video, the pic doesn't help me identify source, could be coming from higher up.

 

Yeah that stuff in the video doesn’t look oily, more water based

 

I have the intake manifold off, i took that off yesterday to look in the V. Cleaned that bit up and taped off the top end. Heres a photo.
Where am i looking for this crossover? Im assuming its not the pipe that leads from the water pump to the heater core tube because thats clean as can be.

 

I understand the video is hard to see, but it is squirting from that hole. The hole is threaded as well. Its then leaking down. It is dry above that hole

 

What's all that crap (gizmos) in the valley? I hope the unit in the rear is not the starter motor. I know NOTHING about the Gen1 Motors BTW

 

bulldog, im unsure of what the blower does, but thats the starter in the V yes

 

Man, that's out of the GM playbook. My dad had an Oldsmobile with the Northstar V8 mounted in the same spot. The blower may be a cooling fan for the starter...

Hope you get the leak sorted, my guess is if it is not a line or hose, it will end up a freeze plug.

 

I guess opening the bell housing (dropping the transmission ) is the next step to find the source

 

I don't recognize that hole. Wonder if @empty_lord knows what it is.

 

That looks like coolant to me not tranny fluid. Those two lines are for the trans cooler (tow package) but the hole above the bracket securing it is supposed to be that way - not sure why? Maybe for another option/bracket/Lexus something or the other...

I think your first guess, freeze plug, is the most likely scenario here. You can confirm that it is coolant and not ATF correct? It's definitely pissing, coming form between trans and block and there is really only one way that can happen. You will definitely need to pull trans unfortunately. If you wanted, you could certainly pressurize the cooling system to see if you can make it leak - might be good to have one on hand anyway to test the others. It's possible some shitty mix of coolant was there in the past, or lack thereof, and a little corrosion has set in.

Truck looks clean underneath and you got an 05'. Hope you got a decent deal - just replace it and move on. They're not hard at all, it's just a lot of work to get to it.

 

If that’s coolant, you have a freeze plug issue behind the flex plate.

 

More investigating just to be certain before I get deep into trans pulling. Pulled the secondary air pump and stuff out. Definitely a nest of some sort was under there. Cleaned it up good. And while I was there I starting thinking about the drain holes in the back of the V, why it only leaked while running, and where the drain holes go. I used a small hand pump and pumped water into that hole in the back of the V. No water underneath. So I just started cleaning the bell real good. I pulled the bolt on the view plate to clean it up. Bam a half gallon of coolant instantly flows out of the gap, rodent nest particles and all…

This I’m assuming, was all coolant that had been leaking from the water pump and upper o rings, draining down into the bell, and literally being stuck and filling up like a pool. I’d assume the small metal plate to see the flex plate would have leaked it all on the ground but that sucker was sealed up good from dirt and grime.
Pretty weird turn of events.

after I drained and reassembled the top end, I filled the coolant again, fired it back up and it’s running great. No squirting coolant.

 

Huh. I’ll be damned. Well shit, at least you figured it out. This is one for he books to remember.

 

Wow. That would be hard to replicate if you tried. Super fortunate turn for you sir. If that bell was holding fluid up that high for a long time it may be good to consider changing your tranny fluid - if not for the fact you haven’t already done it, then just for safety factor?

good follow up!!

 

Sounds like the same o-ring that gave me an issue
https://www.tundras.com/threads/coolant-leak-bypass-pipe-o-ring.81275/

 

Most likely leaks would be the coolant pipe o-ring or the crossover gaskets in that order. Since you have the intake off might be good time to check or delete SAIS. If you have more than 150K consider new contacts in starter solenoid.

 

4speeds dont have that hole.

 

yea in the beginning it was probably that o ring that was leaking into the V. But after I change all those components and it’s still slanging coolant all over? I was baffled lol

 

Wow, that's definitely an odd one, glad you figured it out. From your Vid it definitely seemed like some sort of pressurized leak, not just the Torque Converter slinging fluid and spitting it out a random hole in the housing.

 

Got a link for contacts?

 

I went to an old school auto electric place that rebuilds starters and generator and he had them in the back. Found this link though
https://advancetruckpartsusa.com/products/atp-denso-starter-solenoid-kit-toyota