ENGINE OVERHEATING

Tiny
MR.B8387
  • MEMBER
  • 2005 KIA SEDONA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 60,000 MILES
2005 Kia Sedona. Vehicle continues to overheat even after replacing thermostat, oil, filter and coolant. If it's the heater core how do I check before dismantling the entire dashboard. What else could it be? Air in lines? Bad water pump?
please help, bob.
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Saturday, June 25th, 2011 AT 6:56 PM

32 Replies

Tiny
2CEXPT
  • EXPERT
Could be airlock, clogged radiator, water pump and a blown headgasket, cracked head or block-
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Saturday, June 25th, 2011 AT 7:35 PM
Tiny
CHEFGUY62
  • MEMBER
  • 2005 KIA SEDONA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
It sounds like my rad fan is always running and I just noticed today that as I'm driving the engine temp is okay but stopped at a light etc. The temp shoots up. I had the thermostat replaced last summer.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
2CEXPT
  • EXPERT
Try replacing the thermostat again, check the water pump if its pumping coolant thruout the engine-also the radiator if its partially clogged
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
ANTRUM.ORANGEHOME.CO.UK@F
  • MEMBER
  • 2002 KIA SEDONA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 82,000 MILES
This is a Diesel engine which when it overheats the
revs shut down to tickover until it cools down
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Hi antrum,

Thank you for the donation and sorry for the delay in replying. I do not know why but your question was not at top of our list so it was missed out.

We do not have any info in our database for diesel engines of your vehicle so I do not have anything to fall back on. What I have to offer is only my experience with diesel engines and hope is sufficient to assist in getting the problem resolved.

Before we proceed, I need to understand the situation and here are some questions for you.

1. What have you done so far?
2. When did problem start and was it gradual, from minor and getting worse?
3. Was anything done/happened prior to it happening?
4. Is the coolant in the radiator depleting?
5. Is the reserve ( recovery ) tank constant, depleting or increasing?
6. Is cooling fan mechanical with fluid couplings, electrical or both?
7. When does the overheating occur, at idling, cruising or high speed driving?

Sorry if I am asking too many questions but they are required to understand what is happening. If you have any other information that you think might help, please let me know.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
ANTRUM.ORANGEHOME.CO.UK@F
  • MEMBER
The Sedona I was asking the? Is my Daughters who is on Holiday in the South of France Since I was contacted by her she has had a mechanic out to check the car and discovered that there was an air lock in the cooling system which he fixed nd the car seems to beO/K
John
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
When there is any air lock in the cooling system, it usually is caused by a leak somewhere or a bad radiator cap. Bleeding the system is only a temporary measure unless faulty parts or leaks are replaced/rectified.

Be sure to monitor the coolant level closely to ensure it is not depleting.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
GEOFFCOX
  • MEMBER
  • 2002 KIA SEDONA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 17,700 MILES
Had overheating issue with van 3 months ago and blew heater hose - had it and thermostat replaced. Just began overheating again - used the old heater trick to dissapate engine heat and it worked. Two days ago, after 30 mile drive, overheated almost to max - liquid overflowing from cooling resivour. Let it cool and tried again - soon overheated again with cool air blowing from heater. Took to shop - they let it idle 30 minutes at a time and couldn't make it overheat, yet cool air still blowing from heater. Note: coolant liquid levels had been running low and would have to be topped off about once a week.

With all of this in mind, does this sound like a water pump issue? Is there any way to check to be sure? The shop mechanics finally got it to overheat on a drive - they're not sure it's the water pump because they seem to think there would be a broken belt associated with it, but truth is, they're not sure why it's overheating.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
2CEXPT
  • EXPERT
Cooling fans coming on? No airlock in the system-could be the water pump. If it continues get it block and pressure tested.

One way to test for a bad water pump is to squeeze the upper radiator hose when the engine is hot and idling. Careful, because the hose will be HOT! If you do not feel much coolant circulating through the hose when you rev the engine, the pump may be bad. The other cause might be a bad thermostat that is not opening properly (remove and inspect the thermostat), or a clogged radiator.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
JACKIE28
  • MEMBER
  • 2004 KIA SEDONA
  • 3.5L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 144,000 MILES
My Sedona is suddenly overheating and coolant is coming out of the overflow tank. I really need help as to what this problem may be.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Check if the cooling fans are working.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
JACKIE28
  • MEMBER
I was told that they aren't. Today I noticed that a little switch was turned into a different position. I switched it back and could hear the fan running then. I drove it around a little bit. The gauge went over the middle mark. It didn't run hot as fast but I did notice that I was low on coolant. So I just left the van alone until I could get coolant tomorrow.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
KHLOW2008
  • EXPERT
Seems there is a problem with the cooling system and someone has rigged a switch to turn the cooling fan on. Remember to bleed the system once you top up coolant and check for leaks which could be why you were low on coolant.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
SHADIELNAJDAWI
  • MEMBER
Hello there. I have a Kia sedona 2002 and I encountered the same problem you have. You will not believe it the cause was a faulty radiator cap. Just as simple as this, so I went and bought a genuine Kia cap put there and that's it, all done.
Just try it and I'm sure it will work
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
WPGTRUEBLUE
  • MEMBER
  • 2002 KIA SEDONA
  • 85,000 MILES
Hi. I have a 2002 Kia Sedona with 85000 kms on it and lastnight on the way to work I noticed the temperature gauge had climbed almost all the way to the top. I pulled over, let it cool down then took my time getting to work while carefully watching the gauge. While at work I topped the oil and coolant but unfortunately it still overheated on my way home. Any tips on what I should do next? Could it be the thermostat? Water pump? Please help. Thanks
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
WRENCHTECH
  • MEMBER
The first step would be to pressure test the cooling system for any leaks. Also make sure the fans are working properly.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
MHPAUTOS
  • EXPERT
Yes, a pressure cap will make a big difference it does a very important job in the cooling system, with applied pressure the cooling system boiling point is raised, Water boils at 100DegC at sea level, add a 15Ib cap and it will raise the boiling point to around 121Deg C so cooling systems can operate at higher temps with out boiling, but each engine is designed to run at a specific temp so the correct thermostat and cap are very critical to correct cooling and maintaining operating temps.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
WPGTRUEBLUE
  • MEMBER
I just checked and the fans work and there isn't any leaks
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
WRENCHTECH
  • MEMBER
No, you have to pressure test the system.
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)
Tiny
MAUIBOY
  • MEMBER
  • 2003 KIA SEDONA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 112,000 MILES
My van is overheating. I replaced the radietor and flush it refilled the coolant and it is overheating. How would you know if its the head gasket or just air in the cooling system? If it is the head gasket how do you go about changing it? Is there away to test it?
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Thursday, May 2nd, 2019 AT 6:26 PM (Merged)

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