Question about 2004 Kia Sorento

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Leak around a flange for coolant in a 2004 sorento

Radiator is fine coolant overflow is fine there is a leak around a flange connected to thermostat housing i think, don't know how to change it.

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  • cbusby0326 Jan 18, 2009

    I am unsure that is my problem But I have had decrease in power when accelerating. (seems like loss in compression) while driving, ticking noise as i accelerate, power loss & the vehicle totally stopped.

    There was radiator fluid (antifreeze) at the back of the motor & smoking. Car still wont start

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I also have a 04 sorento. Make sure they check to see if the butterfly gasket has not been sucked into the intake. My motor went because of this but that was back at 42k I now have 80k . They never did a recall on this because it was 1in10,000 that had this problem. they did pay for everything

Posted on Feb 06, 2009

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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

Changed radiator in my 2004 kia sorento has just the presurized fill/overflow tank. cant get antifreeze into system completely cant find a bleeder port. Squeezed upper and lower hoses to remove some air....


You'll have to jack up the front of the car, or safer yet, park the car facing up a large hill, and run the car with the overflow cap off while shaking it back and forth. It will take 5-10 minutes but you will get a lot of air out, after this add coolant and drive around, you heater should work better. This may have to be done multiple times to completely purge the system of air.

Feb 19, 2015 | 2004 Kia Sorento EX

1 Answer

Should the rediator overflow hose be connected to the reservoir


Yes, it should. Heat expansion pushes coolant through the hose into the reservoir. When coolant cools, it will siphon back into the radiator until radiator is full.

Apr 18, 2013 | 2004 Kia Sorento

1 Answer

2004 explorer, overheating, coolant bubbling in resevoir


Hi Mike,first thing to do is raise hood,check coolant level in overflow container,if low,there's a leak.look everywhere around top part of engine area for leaks,if none,then get under vehicle and look for leaks with a flashlight.If none are found,then thermostat may be bad not opening all the way causing it to get hot,here's a link on how to remove,get a pot of water and heat to 180 and see if thermostat opens completely.if not,then bad,if it does,then water pump is bad or radiator is partially clogged.Here's how to replace the water pump.Here's how to replace your radiator.Enjoy your free repair guide.

Feb 24, 2013 | Cars & Trucks

1 Answer

Leaking water sometimes not overheating, is it the thermostat


If the water is coming from your overflow tank or radiator cap, replace them. The seals may have went bad. If the water is coming from a hose connection in the engine compartment, fix the connection. Depending on where/what is leaking it could be as simple as tightening a hose clamp and/or replacing a hose.

Nov 19, 2012 | 2004 Kia Sorento

1 Answer

How to replace the thermostat in a 04 lancer


the thermostat is on the rear of the cylinder head above the gear box and is connected with the upper radiator hose. Drain the radiator coolant by loosing on the low part of the radiator the plastic butterfly drain plug, and let the coolant in an empty bowl. Then by using a 12mm socket loose the bolts on the thermostat flange and remove it.When the thermostat housing removed you will see the old thermostat,pull it out and clean the old gasket Renew the thermostat and use a new gasket,put the flange back on and tight it, Fit the radiator hose and tight the jubilee clip. Then loose the 12mm bleeding bolt which is on the thermostat housing,start filling the radiator with a new coolant until the air comes out of the bleeder and close it. then start the engine and let it in idle with radiator without the cap. When temperature raised to some warm point put the radiator cap and leave it idle till fan starts.Then switch engine off and let it cool down and check the radiator coolant level and the expansion tank fill it to maximum level.

Nov 12, 2012 | 2004 Mitsubishi Lancer

3 Answers

I replaced my radiator on my 2004 with a 2.2 and it seems like the thermostat is not opening. It can not get the air out. It seem to just to over heat and push the coolant out. Randy


REPLACE THERMOSTAT IF TOP COOLANT COOLANT HOSE GOING TO RADIATOR IS HOT TO TOUCH THERMOSTAT OPEN. TO BLEED COOLANT SYSTEM FIRST YOU NEED TO ADD COOLANT TO THE COOLANT OVER FLOW JUG UNTIL COOLANT LEVEL STOP DROPPING AND STAY AT FULL COLD MARK.WAIT 3 MINUTES IF COOLANT DROPS ADD MORE COOLANT UNTIL COOLANT STAY AT FULL COLD MARK.WITH RADIATOR OVER CAP OFF CRANK ENGINE FOR MINUTE WATCH COOLANT LEVEL AT OVERFLOW JUG.IF COOLANT DROPS ADD MORE COOLANT IN THE OVERFLOW JUG.WHEN COOLANT LEVEL STOP DROPPING IN OVERFLOW JUG.SCREW BACK ON THE RADIATOR CAP TO OVERFLOW JUG.WHILE ENGINE IDLING WATCH TEMPERATURE GAUGE WHEN TEMPERATURE START CLIMBING TURN OFF ENGINE WAIT A WHILE KEEP FROM GETTING SCALDED.WHEN COOLANT COOL DOWN SOME. PLACE A LARGE RAG OVER THE COOLANT OVERFLOW JUG OPEN CAP LITTLE AT A TIME UNTIL PRESSURE RELEASED, THEN REMOVE CAP ADD MORE COOLANT IN THE OVERFLOW JUG TO THE FULL COLD MARK.THEN REPEAT THE PROCESS SCREW BACK ON THE COOLANT OVERFLOW RADIATOR PRESSURE CAP.THEN START ENGINE WATCH TEMPERATURE GAUGE WATCH COOLANT TEMPERATURE GAUGE WHEN COOLANT TEMPERATURE START RISING TURN OFF ENGINE AGAIN WAIT UNTIL ENGINE COOL DOWN ENOUGH TO KEEP FROM GETTING SCALDED TAKE PLACE LARGE RAG OVER RADIATOR CAP WHICH IS THE COOLANT OVERFLOW JUG CAP OPEN CAP LITTLE AT A TIME UNTIL PRESSURE RELEASED ADD COOLANT UNTIL AT FULL COLD MARK. WHEN YOUR COOLANT LEVEL STOP DROPPING.AND TOP RADIATOR HOSE VERY HOT THERMOSTAT OPEN AND AIR IS OUT THE COOLANT SYSTEM. MAKE SURE YOUR COOLANT OVERFLOW JUG HAS COOLANT IN IT,WHEN ENGINE COOL DOWN CHECK COOLANT OVERFLOW JUG KEEP COOLANT LEVEL AT FULL COLD MARK.BECAUSE IF OVERFLOW JUG IS EMPTY THATS A SIGN RADIATOR COOLANT LEVEL LOW.WHEN OVERFLOW JUG EMPTY IT WILL ALLOW AIR GET IN THE COOLANT SYSTEM AND CAUSE CAR TO OVERHEAT.WHEN REPLACING THERMOSTAT ALSO REPLACE THE RADIATOR CAP ON THE COOLANT OVERFLOW JUG.

Aug 09, 2011 | 2004 Oldsmobile Alero

1 Answer

How to change the thermostat house in a Dodge 2004 intrepid


Check this procedure for...
2.7L Engine
  1. Disconnect negative cable.
    CAUTION Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
  2. Drain cooling system.
  3. Remove radiator lower hose from thermostat housing.
  4. Remove nuts from heater tube flange studs.
  5. Loosen starter bolt at heater tube bracket.
  6. Pull heater tube out of thermostat housing and position out of the way.
  7. Remove bolt and two studs.
  8. Remove thermostat housing, O-ring and thermostat.
  9. Remove thermostat housing bolts.
To install:
  1. Clean gasket sealing surfaces.
    NOTE Install thermostat with the bleed valve located at the 12 o'clock position, between tabs on seal.
  2. Install thermostat and seal into thermostat housing .
  3. If removed, install two studs.
  4. Install thermostat, thermostat housing and O-ring and bolt. Tighten attaching bolts to 105 inch lbs.(12 Nm).
  5. Lubricate new heater return tube O-ring with coolant.
  6. Position heater return tube flange over two studs. Install nuts.
  7. Tighten retaining nuts to 53 inch lbs.(6 Nm).
  8. Tighten starter bolt to 40 ft. lbs. (54.3 Nm).
  9. Connect the lower radiator hose to the thermostat housing. Install hose clamps.
  10. Refill cooling system.
  11. Inspect for leaks.
  12. Connect negative cable.

3.2L & 3.5L Engines
  1. Disconnect negative cable.
    CAUTION Do not remove pressure cap with the system hot and under pressure because serious burns from coolant can occur.
  2. Drain cooling system.
  3. Raise vehicle on hoist.
  4. Disconnect electrical connectors from engine oil and power steering pressure switches.
  5. Disconnect radiator and heater hoses from thermostat housing.
  6. Remove thermostat housing bolts.
  7. Remove housing, thermostat, and gasket.
    NOTE The OEM thermostat is staked in place at the factory. To ensure proper seating of replacement thermostat, carefully remove the bulged metal from the thermostat housing using a suitable hand held grinder. It is not necessary to restake the replacement thermostat into the thermostat housing.
To install:
  1. Position gasket on thermostat and housing.
  2. Install thermostat housing, gasket and mounting bolts onto block. Tighten attaching bolts to 105 inch lbs. (12 Nm).
  3. Install radiator hose.
  4. Install bypass hose.
  5. Connect electrical connectors from engine oil and power steering pressure switches.
  6. Connect negative cable.
  7. Fill cooling system.
  8. Inspect for leaks.
  9. Lower vehicle on hoist.

Hope helps (remember to rate and comment thius answer).

Apr 28, 2011 | 2004 Dodge Intrepid

1 Answer

2004 kia sorento code P0446


2004 kia sorento, thermostat replaced, all belts, water pump. now there is a coolant leak again, cannot tell where it is coming from. Leaks fairly quickly and overheats within 20 mins. Heat is not working when coolant is not full....could it be the coolant resevoir? head gasket??

Jun 26, 2010 | 2003 Kia Sorento

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