WATER IS LEAKING FROM THE BACK OF THE ENGINE. ITS NOT THE WATER PUMP BUT HE CAR RUNS HOT.
sounds like a heater hose, fix the leak, refill with coolant to the proper level, and the overheating issue might go away
It certainly would not be out of the realm of possibility that the head gasket is leaking externally. Get the cooling system pressure tested to find the leak and repair it.
Search Toyota Sienna Questions
Toyota Sienna Experts
Related Models For Sale
Used Cars For Sale