Question about 2006 Kia Optima

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2006 kia optima is overheating. I turn the heat on and the temp guage drops. No visible hose leaks, but there are telltale antifreeze spray stains on lower radiator hose. Do I need a thermostat or could it be something else?

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Hello, donartias888 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
2006 Kia Optima, 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
2006 Kia Optima

Get more great money saving tips and tricks about your vehicle from: twitter.com/acoates23234

Thanks for the vote, and good luck!

Posted on Jan 13, 2011

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Posted on Jan 02, 2017

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1 Answer

Temp gauge works errtic on a 2001 optima but does not overheat


First check your coolant level. If it is low, look for leaks. Also don't rule out the reservoir isn't bad. Also if the hose is pinched to reservoir, this will cause low coolant in the engine.

Dec 27, 2014 | 2001 Kia Optima

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Kia pinanto 2004, l have to turn up the heating as the car seem to be over heating, is it the fan not working or the thermostat? how much would cost to fix? there`s no water leaking as l have checked.


If the bottom hose pipe is not as hot as the top hose pipe then you have a thermostat problem, but mak sure the radiator fan comes on when the temp reaches half on the guage.

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2006 kia optima overheating, no apparent leaks, top radiator hose gets hot lower never heats up, fans dont come on


I would be looking at the radiator fans themselves, especially if the fans are open
framed motors. I had the same problem with an intermittent fan on a PT cruiser,
If your A/C doesn't seem to be working right at stop lights then the fans are
most likely not operating correctly since they assist the condensing coil when idling.
Second thing I would suspect is a thermostat which is stuck closed. (This will cause overheat).
Hope this is helpful.

Jul 31, 2011 | 2006 Kia Optima

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My antifreeze resevior is completely filled but my temp guage raises above the mid point then drops below the mid point then raises then drops. I started the car and noticed that only one of the two fans,...


The thermostat may be wearing out. A thermostat controls the engine temperature to keep it at a consistent temperature, The other fan will probably turn on if you turn on your Air Conditioner.

Mar 04, 2010 | 2002 Kia Optima

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Where is the blower motor on a 2004 kia optima I have something restricting the blower motor from operating correctly


you have a vacumn leak going to the temp control valve for the heat/ ac unit either the dash controll swicth is bad or you have a vacumn hose broken/leaking

Jan 17, 2010 | 2004 Kia Optima

1 Answer

Leaking antifreeze


the location of the leak needs to be identified. it could be as simple as a hose or a leak in the block. sounds like you need to find a trusted technician to find the source of the leak and repaired before it causes more substancial damage.

Nov 09, 2009 | 2001 Kia Optima

3 Answers

Overheating??


I had the same problem, it was the thermostat.

HOWEVER - also check that the fans come on, that you've got plenty of antifreeze, no leaks, etc.

From the erratic nature of the overheat, it's likely the thermostat.

When you take the old thermostat out, check and see if (after running it under cold water) opens up in a pot of hot water. Mine wouldn't.


Apr 17, 2009 | 2005 Kia Optima

1 Answer

2003 kia optima over heating


out from bottom to top

Nov 13, 2008 | 2003 Kia Optima

2 Answers

I have a 2004 Kia Optima and about a week ago it started overheating. We replaced the thermostat and still the same problem. It happens mainly after running the air conditioning but now it has started...


sucks guys, i have the same problem, at the moment i'm replacing my radiator, just dropped in on a break :)
if it does stop overheating i'll let you know, i've also changed temperature sensor, not it...

Jul 20, 2008 | 2005 Kia Optima

3 Answers

Engine Check Light - 2006 KIA Optima


Hi

Before you turn out the light you should have a code read carried out just to make sure nothing sinister is going on with the management system.

If the car is running ok then the code will probably either pertian to the O2 sensor, the EVAP system, or a drop in catalytic efficiency, but this isn't set in stone, just the most popular scenarios.

Very best regards

Geordie

Jun 13, 2008 | 2006 Kia Amanti

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