Join Date: Mar 2009
Location: Ontario - Canada
Re: 04 xle limited awd coolant overheating
You can verify the operation of the fans on your driveway. You mentioned that they turn ON when you start the engine, that should not happen if the engine is cold and the AC is OFF.
Start your engine cold and with the AC OFF, fans should be OFF. Wait for the engine to warm up (5 to 10 minutes) and you should see the fan (not sure if both but one for sure) turn ON for a minute or so, after that they should start cycling.
The other thing to look at is your coolant level, you could have air in the system even with a full reservoir. This also happens when you have a small leak or bad radiator cap. With the engine cold, remove the cap and fill the system, press the upper rad hose to remove any air bubbles. Park the van on a slope with the front facing down to facilitate removing the air.
If you need to add more than one quarter, I'd suspect you have a leak on the upper portion of your system.
I replaced my rad not too long ago due to a minor leak on the upper portion of one of the side tanks, it would never leak (not visible) but the refrigerant would evaporate through there leaving a muddy green stain. The reservoir was full but the system would slowly lose its fluid without pulling/replenishing from it.
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