I suggest you check the pipes to the rear heater which are prone to corrosion and mystery coolant leaks.
The pressure cap on the engine coolant filler neck can leak when the housing becomes corroded and rough so the rubber washer no longer seals or the rubber washer becomes perished - note the cap should seal in two places so coolant expansion is pushed into the bottle and then sucked back when it cools but it won't do that unless the cap makes an airtight seal under the rim of the cap.
SOURCE: 05 Kia sedona losing coolant
Hi!! check the oil if is like milk color head gaskets problems . o. if is the rear maybe the water bypass hose o this van has rear heaterinside the van . but follow the lines by the chasis on the bottom thats two thick lines about 5/8. o 3/4 . this line provide heat to the back
SOURCE: coolant leak at the top radiator hose
the plastic radiator tank that the hose nipple is part of can be replaced by any radiator repair shot for about $75-100
SOURCE: 2002 Jeep Grand Cherokee leaking coolant and power steering fluid
Just a heads up, $10 bucks will buy you a seal kit for the P.S. pump. I topped mine off for a couple months, then the oring on the high pressure line (from pump, front center) blew and dumped the reservoir in a matter of miles.
The line can be a stinker to get off, recommend driving the car for a few minutes to heat up the pump a little. Don't forget the 20MM wrench.
SOURCE: 2000 Ford Explorer 5.0 V8 Leaking coolant
sounds like the thermostat gasket is leaking. Might as well change the thermostat and gasket at the same time. make sure the hose clamp is tight sometimes it needs to get tightened up. could be lealking from the hose and running down.
SOURCE: The anti-freeze/coolant seems to just disapear.
My prob was the over flow tank in 04 sorento. they are faulty.
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