It has been using antifreeze and every two to three weeks it starts overheating. Now, the overflow is full and I filled radiator but the temp gauge will peg as being overheated even when the defrost is blowing cold air. The rear heat doesn't work it just blows cold air. Not sure if this is a thermostat issue or a coolant emp sensor or if it is something else. Can anyone help?
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Re: overheating in 2002 sedona
I would also check your oil for the infamous white milky substance. Which usually means you have a blown head gasket. You will need to get this repaired or just limp the vehicle along Replace the thermostat and check for any cracked hoses etc. If you still have issues let me know. Air bubbles in your coolant system can also cause this. Keep adding coolant untill it stops taking at and is at the fill line on your reservoir.
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engine running too hot.check coolant level, should be 50/50 antifreeze and water.replace thermostat and radiator pressure cap.check antifreeze level in the radiator,coolant level should be just below radiator cap, add coolant to overflow jug,should alway be at the full cold mark.empty coolant overflow jug will allow air be drawed in the coolant system causing overheating.if overheating happens when coming to a long stop.could have faulty engine coolant temperature sensor or bad coolant fan fuse or relay.
The heater core is leaking into the heaterbox under the dash. Which is why you smell antifreeze/coolant inside. After a while (if left go too long) you'll notice antifreeze on the floor/carpet and possibly running out from under the vehicle as it flows out of the drain for the air conditioner (the heaterbox has a drain in it to let out the moisture produced by the a/c)
My 2005 KIA Sedona started overheating in Winter 2009/2010 and was loosing antifreeze. No leaks from the heater hoses or radiator hose. No pressure in the radiator either.
I had found a site where folks were discussing the same things and someone brought up the rear heater. Apparently KIA has run steel hoses running under the chasis to the rear of the van and these rot.
I looked under the rear at the wheel well and located the lines and they were wet with antifreeze. I traced the lines to the firewall and found where the lines were connected to the coolant system and bypassed the rear heater lines.
I then filled up the radiator and overflow tank with antifreeze and started the van. I rocked the van to get air to move out of the lines and kept adding antifreeze until it was full. then used the overflow tank to top it off.
Hello, rpok1 and thank you for asking your question on Fixya!
Here is a simple process that will walk you through a few steps that
will pinpoint the overheating problem on your 2002 Kia Sedona,
without even using any tools. It has helped millions of people, and I am
certain that it will help you, because I wrote it for people in your exact situation. How to diagnose your overheating 2002 Kia Sedona
I would pay close attention to these instructions.
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