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.

Make sure hose is on all the way. Make sure radiator isn't crack at upper hose connection. Good luck. Just start it and watch for leak as it gets warm.

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!

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.

remove wiper arms 14mm remove rubber strip & plastic covers then you can remove wiper motor assembly 10mm then unbolt steel panel 10mm now you can access hose ,

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.

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

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.

yes but if leak is from hose on back of motor they are sealed by an o-ring so thats all you need

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.

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