My 2004 toyota sienna has been overheating, already replaced radiator with a new
What is your question?
Replaced with new radiator and new thermostat, It's been going on for like a week and still overheats and it's doing it everytime we turn it on and it's running it will start to overheat again, Right now it doesn't have any antifreeze only water could this be another reason? No hose leaks or any leak, it was driving fine in till turned on a/c then started slowly overheating and when turned on it does the same without the a/c.
What makes this problem better or worse?
It's worse when engine is hot
How long has your 2004 Toyota Sienna had this problem?
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Water is fine for testing and won't make it overheat. Just need to mix in antifreeze after you figure out the issue.
Make sure the fans are coming on and that the ac condenser in front of the radiator isn't dirty or clogged.
Alex
Thank you I will check that.