Question about 2004 Honda Odyssey

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Losing coolant in 2004 odyssey - replaced radiator - still happening .

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Check your hoses and radiator cap

Posted on Jul 26, 2009


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I bought a 2003 Honda Odyssey used.It was running hot when i got it. I did a compression check on all cylinders.Readings were 240psi consistently on all six cylinders and 250psi on the wet test. Chang

Can you tell if it is really getting HOT? Perhaps it is just a bad reading that maybe the new sensor will correct? That fits with the delayed thermostat & fans. Perhaps checking with a non contact thermometer?
The compression sounds good so the head gasket must be intact. No mousse on the oil cap or evidence of oil/coolant exchange?
Radiators can get clogged - more use for that non contact thermometer - make sure the radiator has no cold spots indicating blockages.

Dec 25, 2014 | 2003 Honda Odyssey

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How can i tell if my radiator is clogged and not holding pressure and losing fluid

Clogged radiator and leaking radiator are two different problems.
Either one, warm the car up first. Just turn it on and let idle until it comes to normal operating temperature. Once there, turn the car off and pop the hood. Carefully, touch across the radiator from one side to the other. If the radiator is clogged, one side will be cool to the touch. If one side is just cooler than the other, that is normal.
For leaks, just look around the radiator and its hoses for coolant leaks. Then look around the engine. Specifically the head(s), hoses, and freeze plugs. If no coolant is seen in those areas and your still losing coolant, you may have a blown headgasket and leaking coolant internal to the engine.

Nov 28, 2014 | 2004 Chevrolet Impala

2 Answers

2002 suzuki grand vitara coolant lose with no visual leak replaced water pump thermostat and radiator cap

could be head gasket leaking if there are no obvious leaks from hoses,gaskets,radiator etc

May 10, 2014 | 2000 Suzuki Grand Vitara

3 Answers

My 2000 Odyssey keeps redlining the temp guage, but it has a new radiator and thermostat, and the coolant is not boiling over. It only seems to happen after driving freeway speeds. Once it redlines, A/C...

You may need to change the water pump. When the engine is cold undo the rad cap, start the engine & see if there is any coolant moving through the rad. If not change the water pump & the pump serpentine belt. This should solve the problem unless the headgasket is in bad shape. Good luck!

Jun 08, 2010 | 2000 Honda Odyssey

2 Answers

2004 jeep grand cherokee overheating. changed water pump, thermostat. no heat from heater. and still overheats

Are you losing coolant. If you are I would check your heater core which is located under the glove compartment.

Feb 05, 2010 | 2004 Jeep Grand Cherokee

1 Answer

Honda Odyssey Coolant System Prob.

You may have air in the system. Run the car with the cap removed and the defrosters on allowing air to escape. Add antifreeze as needed to keep full while running. Fluid level will drop as thermostat opens.

Dec 14, 2009 | 1997 Honda Odyssey

1 Answer

Where is the bolt to drain the coolant in the block of a 2004 honda odyssey v6

Lower right or lower left side (between radiator and engine) of the radiator itself.

Jul 29, 2009 | 2004 Honda Odyssey

1 Answer

How do you replace the radiator coolant on a 2005 Honda Odyssey

Try looking here for general removal/replacement info...

Jul 02, 2009 | 2005 Honda Odyssey

1 Answer

1997 Honda Odyssey thermostat

Honda recommends that the cooling system be topped up with coolant four times as part of the refill process. When the engine is fully cold open the radiator cap and add coolant until full. Run the car until fully warm with heater at maximum. Let it completely cool down. Remove radiator cap and top up with coolant. Repeat this process two more times. This helps purge the air out of the nooks and crannies in the cooling system.


Jan 15, 2009 | 1997 Honda Odyssey

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