Spontaneous leak

[Dunckel]

I drove my car yesterday for a while. No WOT, shifting between 3k and 4k rpm. I parked it around 4pm. Around 7pm I went out to make sure the doors were locked. Being a supra owner, I quickly scanned the ground under the car to check for leaks. All was clean. This morning, I drove my truck to work, again checking the ground for leaks before leaving. (It's a habit) All clean. After work today, I notice that I have developed a coolant leak. It seems to be dripping off of the bottom of the transmission. I am on my way to my dad's place to look it over.

Question: What would cause a leak to develop by itself? And what should I look at first?

 

[phoenix6]

I drove my car yesterday for a while. No WOT, shifting between 3k and 4k rpm. I parked it around 4pm. Around 7pm I went out to make sure the doors were locked. Being a supra owner, I quickly scanned the ground under the car to check for leaks. All was clean. This morning, I drove my truck to work, again checking the ground for leaks before leaving. (It's a habit) All clean. After work today, I notice that I have developed a coolant leak. It seems to be dripping off of the bottom of the transmission. I am on my way to my dad's place to look it over.

Question: What would cause a leak to develop by itself? And what should I look at first?

Dude I JUST had this problem, most likely 1 of 3 hoses, either the 2 connected to your EGR plate ont he back of the head, or the coolant hose connected to the metal line behind the block.... Its a bitch to get off and fix but it is possible.

 

[mkIIIman089]

You'll have to point out these coolant lines running to the EGR plate to me.

It's probably a leak somewhere near the back of the motor. (duh)

You normally induce leaks on purpose? Normally (at least for me) they seem to start all by themselves, lol.

 

[Dunckel]

or the coolant hose connected to the metal line behind the block....

The one that has a soft, almost 90 degree bend towards the passenger side of the car? (Sorry, I don't have my camera here) I replaced that one a few months back. It is dry behind it.

It's nothing I can see from over head. And I don't have time right now to lift up the car and look underneath. Earlier, I did notice that the top of the tranny is wet.

 

[Poodles]

hose on the driver's side that goes to the heater core (not the on that comes off the top of the head and goes to the passenger side)

 

[Dunckel]

^I replaced that one when I did the heater core a few months back. But I will take a closer look at it tomorrow.

 

[Poodles]

hose clamp might have come loose...