07 Expedition coolant leak

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Jacob Garff

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Under pressure your hoses in pic #1 are likely leaking, I was able to find a video on YouTube where I fixed that hose with a simple pipe connector and hose clamps. check it out. I bet if you move that house around a bit, you will find where it leaks.

It was leaking last night under no pressure other than the warmth of the day. I've been able to track it behind the firewall. Just haven't had time to start digging into it.
 

Will Williams

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I just confirmed where the leak was coming from. One of the metal hose that supplies the auxiliary heater core for the rear of the vehicle was leaking. it was due to a broken bracket which was to hold the hose in place. The hose was rubbing against the fire wall, weaken the hose.
 
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