Question about 2004 Kia Sedona

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Radiator coolant loss due to evaporation

We are facing the problem of radiator coolant loss due to evaporation.So frequently top up required.
Engine operationg range is 96 deg to 105 deg C

We want probable causes anf soln for the same.

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I had a problem like that in an old Mercury Sable I owned. I had to periodically add a bit of coolant because it was disappearing and not dripping anywhere. I found out what was causing the problem on a cold winter day, a short (6") hose going from the water pump to the engine burst. Don't wait until a hose bursts.

Likely the coolant is going one of a few places. It's escaping from a pinhole in a hose somewhere, going into the engine's cylinders (blown/leaking head gasket), going into the crankcase and mixing with the oil, etc. Probably the best way to start diagnosis is to add special dye to the cooling system and use a black light to see if there's an external leak in the system. If not you can pull the spark plugs and check them to see if coolant is going into the cylinders (coolant does a good job of cleaning carbon off the inside of the combustion chamber). Well that should be good for starters. Good luck!

Posted on Dec 12, 2008

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Coolant loss 1997 mercury sable duratecv6

Posted on Jan 23, 2009


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There can be numerous reasons for coolant loss.

External Coolant loss
1. Coolant escaping from the radiator cap. Replace the cap.

2. There is an external leak in the system which could be from a hole or crack in the radiator(especially the plastic sections) or a hole in a radiator hose or there is a loose hose connection.

3. The water pump gasket has deteriorated and coolant is escaping from around the water pump fitting.

4. There is a crack in the coolant overflow reservoir and coolant is leaking out.

Internal Coolant Loss
1. Coolant is escaping into the engine's cylinders in which event you will see white smoke coming out of the exhaust and you will also have combustion gasses leaking into the coolant passages which will cause bubbles and overheating of the coolant. This problem will be due to a failed cylinder head gasket, a crack in the cylinder head or both.

2. Coolant is escaping into the engine lubrication system and in that event you will see evidence of coolant in the engine oil. Pull the oil dipstick and check the condition of the oil. If it looks a bit like chocolate milk and not just normal oil colouring you have coolant in there. Also check the radiator cap when the engine is cold. There may also be evidence of oil in the radiator coolant that is stuck to the radiator cap and around the neck of the radiator.
This problem will also be due to a failed cylinder head gasket or a crack in the cylinder head or both.

Whatever the cause in your case don't hesitate to have it checked out by a competent professional If you lose coolant and you allow the level to run significantly lower than normal the engine will overheat and you will cause very expensive engine damage.

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What causes 02 buick century that not running hot to show the guage hot and the fan running and temp light to show

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2 If the engine is not running hot and the gauge shows that it does, the gauge is faulty, probably the sender unit. I am not sure of the Buick, but some cars have two senders, one for the gauge on the dash and the other for the radiator fan. If your car has only one, the information from the sender is probably used by the ecu to switch on the fan, so if the sender is faulty you will get the symptoms you describe.

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Loss of power

Forenza 2004
this is a Suzuki, id sell it, and is not even real Suzuki its a badged
product. actual. Daewoo Lacetti
Daewoo can't sell cars here so suzuki tries and fails... amazing car.

p0217 means overheated.
and when overheated power is lost. stop that or burn up the engine.
do the service on engine, 60,000 miles. steps.
and a new thermostat. i bet yours is 10 years old,,huh and END of life.
non last over that.
id sell it. when fixed, Suzuki's are no good.

FSM data.
Trouble Code Conditions:
Engine is running. Engine coolant temperature is higher than 50 Deg C (122 deg F). Intake Air Temperature (IAT) is higher than 35 deg C (95 deg F). Engine soak time is higher than 360 minutes, or start-up coolant temperature is less than 45 deg C (113 deg F). Engine Coolant Temperature (ECT) sensor reading is greater than 107 deg C (224.6 deg F).
Possible Causes:
  • Sensor ECT
  • Circuit
  • ECM

the fsm skips bad thermostat. odd that... huh"?
and dead cooling fans.
and clogged radiator.
the first step is to see if it really is overheated, with a IR pyro gun.
if not, the ECT is bad
if is overheated, then fix that, as the ECT didnt lie.

simple , the sensor lied, (nah) or did overheat.

or air pockets at the ECT, low coolant actual.

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So the level keeps dropping in the reservoir? If you have to keep adding coolant to the reservoir, the system is leaking or losing coolant somewhere. Have the system pressure tested to find the leak. Is the reservoir itself leaking? When the level gets low enough, first the reservoir will go dry, then the radiator level will start to drop.
Here's how the reservoir works: coolant is under pressure from the radiator cap seal. As coolant heats up from hot engine, it expands, and pressure forces the radiator cap seal up, coolant is forced into the reservoir-remember the hot mark on the reservoir? When car is shut off, coolant contracts, creating a vacuum in top of radiator. This vacuum works to suction coolant back from reservoir into the radiator, keeping the radiator topped up, and coolant should now be at the lower cold mark on the reservoir. It is a closed, sealed system. The only loss of coolant will be a very small amount of evaporation from the reservoir. If coolant level keeps dropping, there is a leak somewhere.

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I have the same model, and had the same problem 2 years ago- random overheats. Problem turned out to be the thermostat installed upside down. The thermostat should be fitted so the operating part with the spring goes up into the engine block. A similar problem I have now is overheats and coolant loss out the expansion tank overflow, specially during wide open throttle driving. Also bubbles in the radiator. Seriously suspect head gasket failure.

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How do I add refridgerant to my 2000 corolla

Check this procedure to add and check Coolant level...

Warning: Do not attempt to remove the radiator pressure cap or expansion tank cap when the engine is hot, as there is a very great risk of scalding. Do not leave open containers of coolant about, as it is poisonous.

Car Care
• With a sealed-type cooling system, adding coolant should not be necessary on a regular basis. If frequent topping-up is required, it is likely there is a leak. Check the radiator, all hoses and joint faces for signs of staining or wetness, and rectify as necessary.

• It is important that antifreeze is used in the cooling system all year round, not just during the winter months. Don't top up with water alone, as the antifreeze will become diluted.


1. The coolant reservoir is located on the left-hand side of the engine compartment. The coolant level is visible through the reservoir.

2. If topping-up is necessary, wait until the engine is cold and remove
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Hope helps (rememnber rated this).

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Check the ground and the bottom of the passenger side of the car just inside the front right tire, this is where your water pump is located. If you have a leak then you may be low on coolant and this will cause the coolant to boil and steam and the car to run very HOT. Check that you have coolant all the way to the top of the radiator when you remove the radiator cap, ONLY DO THIS WHEN THE CAR IS COLD TO AVOID STEAM IN THE FACE! Also check to see that your cooland overflow reservoir is filled to the appropriate level.
Hope some of this helps you find the problem!!

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Take care not to get scalded - check it at about 180 to 200 deg.

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Engine gets hot

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--partially blocked radiator caused by build up of rust over the years if never flushed as regular maintenance.
--Insufficient coolant to water ratio. Should be at least 30% or more coolant in the radiator.
--Or combination of above.
Hope this helps.

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