Question about 2003 Kia Sorento

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Car died my grandfathers 03 kia sorento sprung a leak 2 days ago at the rear of the engine. I assume its a heater hose or somethingh attatched to it. today however I took the car for a test drive to let the system build up pressure so that I could possibly isolate the leak. while driving the car began rattling and when I slowed to inspect it, it died. it started back but it was making the rattling sound. in my attempt to get it back home it died again. then it acted like the battery was dead. I let it set for 10 minutes or so and it started again maiking the noise. I got it home and let it set for 30 mins or so. I tried to start it again and it fired with no problem it ran until the temp gauge got to the half way point started the noise again and died. it almost sounds like a diesel when it makes the noise. the gas was 89 octane, there is no damage to the pulley system Im stuck.

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54 kia serento emission control system malfunction light has eventualy come on previosly the car cut out twice once last month plus once 9 weeks ago when towing caravan. thinking itwas something to do with electrics on van

Posted on Oct 17, 2008

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I have a antifreeze leak on the back side of my 3.5 liter kia sorento motor,I took all the heater hoses loose and they look fine. What else could be leaking coolant the Y that connects the hoses is ok


Hi Kevin.

The general route of coolant will be the engine block, the heater core in/near the dashboard, the radiator, and, often, a coolant overflow reservoir that buffers you from leaks if your coolant gets extra hot or bubbly.

So, along with the heater hoses, there are the radiator hoses, either end. Hose connections to the block. Hose to wherever your coolant check/refill container is. The drain plug at the bottom of the radiator.

There is one other place that coolant can go, though you gotta hope this isn't it. If your head gasket is on it's last legs, coolant can start leaking into your cylinder head. This can show up overtly as white smoke, not so smooth running, or mysterious random moments where a hose suddenly bursts or pops loose. Or it can just be an occasional pinhole leak that's hard to detect.

One of the biggest tells - park the car on a flat smooth surface overnight after you've driven it a while. When you come out the next day, is there coolant on the ground anywhere. if yes, the location can help you track it. if no, then exit through the cylinder head may be the culprit. You'd want to run a compression check to make sure, and then contemplate whether fixing it is worth it on a twelve year old car.

Good Luck!

Nov 20, 2015 | 2003 Kia Sorento

1 Answer

How do I replace the water hose outlet on the fire wall of a 2004 kia sorento


You mean the brass or metal heater core outlet? If that is leaking and not the heater hose, you will need to replace the heater core. It is like a small radiator with coolant running through it. Find a repair manual for the kia to see the heater core replacement procedure. Some are easy, and some require removing the dash to replace the heater core- a pretty time consuming job.

Sep 09, 2014 | 2004 Kia Sorento

1 Answer

2003 kia sorento leaking antifreeze after new radiator


You will want to taste the leak (or get someone else to do so) and make sure it is not water.
Antifreeze has a very sweet taste.
You should only need one drop, and be sure to rinse your mouth out really well afterwards.
Whenever a radiator is replaced, the hoses attached to it can also begin to leak, because the rubber hardens with age, and can be harder to seal again.
I prefer a stainless steel band clamp, not the original equipment.
A good flashlight would be a help as you look for the problem.
Be sure to check the heater hoses, and the other hoses that carry coolant, as any of them could be leaking, due to "being disturbed" or due to the possible higher pressure the new radiator is giving the cooling system.
Be blessed.

Mar 18, 2013 | 2003 Kia Sorento

1 Answer

04 KIA SORENTA ac coolant fan stays on even if when car is shut off....


There has been known promblem with the 03- early 05 sorento of radiator fan staying on even after engine is turn off, it is claim to be a electrical malfuction in the engine termalstat. However you may just need to check your coolant level and fill it up as there is also a promblem to the sorento's having a leaking radiator coolant resevior too. Pretty much I own a 03 sorento, and it has been nothing but promblem, but glad I got rid of it. However like I said, check your coolant level, and fill it up with 50/50 coolant to recommended level. Should be able to solve the promblem, since it seems your engine is lacking coolant and is overheating, and the fan turn on automatic even after you have shut of your car to help cool it down.

Feb 02, 2011 | 2004 Kia Sorento

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I have a 2005 Kia Sorento and about a month ago my heater core started leaking so we were able to bypass it. Now my car is overheating or smoking my temperature gauge is right in the middle but yet the...


If it is smoking, it could be a bad head gasket. If the smoke is white water vapor which is coolant leaking through the head gasket of the engine into the combustion chamber or cylinder.

Also, I would check the thermostat for function, and the fan for operation when hot.

Oct 28, 2010 | 2005 Kia Sorento

1 Answer

How do I replace the radiator in my 2004 kia


I don't currently have access to step by step instructions for your Kia Sorento, but I would imagine that it takes a standard tool ratcheting tool set to unscrew the bolts for the shroud, and lift any fans out of the way. Then, the radiator hold down hardware can be removed and the radiator should be disconnected fromt he cooling system (via the hoses) and then you can pull it out. It does not weigh much.

Installation is the reverse of the removal.
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recalls for engine follow:

Gasoline Engines
2004 KIA SORENTO


03/01/2009 KIA REMANUFACTURED ENGINE PROGRAM 01/01/2004 CYLINDER BLOCK DAMAGE - HEAD GASKET LEAK - POOR RUNNING OR HARD START, EXCESSIVE WHITE SMOKE AND/OR COOLANT SMELL FROM EXHAUST, MISFIRE DTC - REVISED 06/01/2005 LOCKNUT RE-USE PROHIBITED 07/30/2007 CRANKSHAFT PULLEY BOLT REPLACEMENT

Jul 21, 2010 | 2004 Kia Sorento

1 Answer

Windshield washer fluid barely sprays then quits. Does not spran on rear window at all. Good fuse and can hear motor running. 2006 kia sorento


windshield washer hose could have a hole somewhere have some one run washer pump while you check under hood for leaks if you cant find any then its safe to assume that pump is worn out still turns but the pump suction is worn out, must be replaced.

Jan 14, 2010 | 2006 Kia Sorento

1 Answer

Somewhat, Is there any other reasons water would leak from hoses at the back of the hood area smelling like anti-freeze other than a head gasket? 2004 Sorento Kia 4x2


There should be hoses (2) running from the engine to the cabin heater and back. These would be at the back of the hood area, but down low. Watch your coolant level. If it is dropping then you have a problem. It could be a head gasket also that is spraying out the back of the engine. You just need to find the leak and fix it or have it fixed

Good luck and hope this helps you

Aug 10, 2009 | Kia Sorento LX Cars & Trucks

2 Answers

I have a 2004 Kia Sorento that is leaking antifreeze. The leak is a few drips when the engine is running but pretty much pours out when the engine is shut off. The temp gauge does not show that the engine...


could be one of the two radiator hoses. There are also two hoses in back that go to the heater core. All of these connections attach to plastic nozzles on the radiator and also the ones on the heater core are plastic and can crack. Also check radiator condensor for leaks.

Jul 10, 2009 | 2004 Kia Sorento

5 Answers

The anti-freeze/coolant seems to just disapear.


first check the exhaust... if it is white you have a blown head gasket.... next issue may be a stuck thermostat next place to look is the water pump, there is a "weep" hole on the casting, if that is leaking you will need to replace the water pump

Jun 09, 2009 | 2004 Kia Sorento

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