Why do my aHonda Odyssey keep overheating?

Good possibility the cooling fan is not coming on if it only gets hot while stationary. When driving there is air flowing across the radiator. I highly recommend taking it to a certified technician. A short list of possibilities are, fuse, sensor, relay, faulty wiring, and fan motor. Unless you can determine the cause of failure yourself, it is almost always better to take it to a reputable shop. You could end up spending a lot more trying to do it yourself by replacing a lot of parts unnecessarily.

www.repairpal.com/repair-shops