Coolant Leak

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CharlieJ

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I just fixed the same leak. The heater hose had a hole rubbed in it by the trans cooler hose rubbing against it. It runs down and looks like the trans hose is leaking.
 

BlackBetty

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I have a leak too but nowhere near that bad. A few quarts every ~4 miles. Crusty coolant stains under the water pump but maybe elsewhere too. At the dealer currently but it's also in for the transmission.
Umm… that’s not good either.
 
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SyndicateZ

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I'm guessing an idler pulley
My guess is coolant got into the alternator. I usually think worse case haha because then my ESP wouldnt cover a new alternator due to the failure of an uncovered part (hoses)
 
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Henry48

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Had that same issue on my 2018 platinum. Dealership changed the water pump first. That was a thousand plus dollars. 3 days later temp gauge came back on temp got in the red zone above 250. Took it back to the dealership. Found heater hoses on the right side of the engine were cracked 1300 plus dollar job. Had my 2000 expedition for 13 years and 330 miles never had the issues I'm having with this one
 
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SyndicateZ

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Had that same issue on my 2018 platinum. Dealership changed the water pump first. That was a thousand plus dollars. 3 days later temp gauge came back on temp got in the red zone above 250. Took it back to the dealership. Found heater hoses on the right side of the engine were cracked 1300 plus dollar job. Had my 2000 expedition for 13 years and 330 miles never had the issues I'm having with this one
Right side of engine hoses were cracked? passenger side correct?

How much did they charge u to replace the hoses?
 
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SyndicateZ

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$1,150 to replace the heater core hoses and upper radiator hose.

They also found that the passenger side vlave cover was leaking oil too and the turbo has some soot on top of it due to the cover leak..This was a covred part under premiumcare tho
 
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SyndicateZ

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sooooooo.. Picked up the expy today from the dealer after heater hoses, upper radiator hose & passenger side valve cover replacement. While on a highway I accelerated to pass a car and felt and heard a loud clunk type noise as if something popped off or snapped from under the vehicle. It happened when the tranny went to downshft to accel and then total loss of power. It was loud like the tranny clunk noise common with 10R80 but worse. It doesnt want to accelerate (past 2k rpms) and notice the turbo guages dont move at all now.Engine (or tranny) also sounds weird when I give it gas while under load.

Is this limp mode? There are no CEL lights (yet) and no warnings
 
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tacomaccountant

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This is my first post on this forum. I currently drive a 2021 4runner (tacoma before the kids lol) so I made the account after receiving the recall notice on my wife's car about the brake lines leaking. She drives the 2023 expedition. Anyway... I was investigating the brake issue and noticed that her coolant is pretty low. Definitely below the minimum. The car only has 26k miles on it so there must be a leak somewhere. I will investigate more this evening when I have the time. Ha I don't have much to add here yet I suppose other than to brace myself for a potentially expensive series of repairs depending on what I find.
 

tacomaccountant

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Update. I could not find any obvious examples of a leak.... I picked up some coolant this morning and will refill and just keep an eye on it I suppose. Weird.
 

East-TN

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sooooooo.. Picked up the expy today from the dealer after heater hoses, upper radiator hose & passenger side valve cover replacement. While on a highway I accelerated to pass a car and felt and heard a loud clunk type noise as if something popped off or snapped from under the vehicle. It happened when the tranny went to downshft to accel and then total loss of power. It was loud like the tranny clunk noise common with 10R80 but worse. It doesnt want to accelerate (past 2k rpms) and notice the turbo guages dont move at all now.Engine (or tranny) also sounds weird when I give it gas while under load.

Is this limp mode? There are no CEL lights (yet) and no warnings
Any update? Maybe I missed it.
 

Mr Big

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sooooooo.. Picked up the expy today from the dealer after heater hoses, upper radiator hose & passenger side valve cover replacement. While on a highway I accelerated to pass a car and felt and heard a loud clunk type noise as if something popped off or snapped from under the vehicle. It happened when the tranny went to downshft to accel and then total loss of power. It was loud like the tranny clunk noise common with 10R80 but worse. It doesnt want to accelerate (past 2k rpms) and notice the turbo guages dont move at all now.Engine (or tranny) also sounds weird when I give it gas while under load.

Is this limp mode? There are no CEL lights (yet) and no warnings
It sounds like limp mode. I've had the loud clunk a few times, when accelerating, going up an on ramp or passing someone, but never the restricted rpm and no error codes. I know one of the TSBs refers to that slippage where it sounds like it may go into neutral then pop into gear. It has not come back, since my dealer performed a TCM software update, and I erased reset and disabled TCM learn. I'm not sure which fixed it.
 

Mr Big

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Update. I could not find any obvious examples of a leak.... I picked up some coolant this morning and will refill and just keep an eye on it I suppose. Weird.
I had a similar situation where I lost most of my fluid on my maiden voyage home, after purchasing the vehicle. The warning light and sound came on, going down the highway, so immediately pulled over. It turned out that the dealer did not fully tighten the cap. They had to tow it back to the dealership. I noticed, doing my annual flush and refill, that the cap gets tight at the end, but needs one extra turn to be fully tightened.
 
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