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First you have to determine if this is the hose or the connection to the heater core itself. This can be difficult to do. You should get a pressure testing machine for automotive cooling systems and use it. When you pressurize the system you can see where the leak is exactly. If it is hoses that are bad you can replace them. If it is the pipe that connects to the core (the nipple) then you need the whole core. When you replace the items that are bad you need to use permatex on the connection to be sure it wont leak again.
You may be able to braze (2) 1/2 in. copper 90 degree water fittings back to back to install as a jumper. Install jumper well ahead of bad hoses. I have never seen a stopped up heater core. Replace any suspect hoses and temp control valves.
Power
Fold Rear 3rd Row Seat on 2006 Ford Explorer will not raise. I can hear
motor trying to raise seat. The gear does not appear to be turning.
Motor hums like it is in a bind. What needs replacing?
you may have abad hot /cold blend door acuator.its bolted to air box. also make sure both heater hoses going to heater core are hot,if only one is hot and the other is luke warm or cold then you may have a clogged heater core,remove hoses (@ core) and flush with water hose go both ways a couple of times. good luck hope this helps.
Check the antifreeze usually if the heater is blowing only cold air you are low on antifreeze and the heater coil is not being heated by the flow of antifreeze
locate the rear heater hoses, make sure eng is at operating temp.
fill of the 2 hoses , should be worm tot he touch, if one is hot and the other is luke warm, the problem is in the circulation in the rear heater core. thanks and good luck . let me know. kindest regards Bill ps. don't over look the fan speed at the rear core.
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