Coolant overflowing the overflow container.
SEE PICTURES ON PAGE TWO OF THE THREAD.
SEE PICTURES ON PAGE TWO OF THE THREAD.
2016 Toyota Sienna with 15,000 miles. Coolant has appeared on TOP of the overflow tank since the van was new. It has never overheated or been on long trips. I took it to two different dealers. The dealers said they couldn't find anything wrong. All they did was replace the coolant bottle cap and radiator tank cap. The level of coolant in the overflow tank and radiator is always proper when the engine is cold. There is a drain tube in the cap of the overflow tank so I don't understand why coolant ends up on top of the tank. I come home from a drive and there is wet/fresh coolant on top of the tank.
In my experience the only time you would have coolant overflowing the coolant bottle is if you had a pressure issue of some kind and/or a blown or damaged head gasket. There is no white smoke coming from the tail pipe and the vehicle drives perfect. The oil is the correct color without any coolant in it.
I want to give the dealer more ideas of what to check or I will have to trade this van in before the warranty is over. I don't want a $3,000 head gasket repair out of warranty. I would like to keep this van for more than 10 years so I really would like to figure this out.
Questions:
1. Has this happened to your van?
2. Any ideas of what to check to diagnose this problem?
3. Why would coolant end up on the tank instead of flowing out the hose connected to the coolant overflow tank?
Thanks guys.
Jeff Fox
SEE PICTURES ON PAGE TWO OF THE THREAD.
2016 Toyota Sienna with 15,000 miles. Coolant has appeared on TOP of the overflow tank since the van was new. It has never overheated or been on long trips. I took it to two different dealers. The dealers said they couldn't find anything wrong. All they did was replace the coolant bottle cap and radiator tank cap. The level of coolant in the overflow tank and radiator is always proper when the engine is cold. There is a drain tube in the cap of the overflow tank so I don't understand why coolant ends up on top of the tank. I come home from a drive and there is wet/fresh coolant on top of the tank.
In my experience the only time you would have coolant overflowing the coolant bottle is if you had a pressure issue of some kind and/or a blown or damaged head gasket. There is no white smoke coming from the tail pipe and the vehicle drives perfect. The oil is the correct color without any coolant in it.
I want to give the dealer more ideas of what to check or I will have to trade this van in before the warranty is over. I don't want a $3,000 head gasket repair out of warranty. I would like to keep this van for more than 10 years so I really would like to figure this out.
Questions:
1. Has this happened to your van?
2. Any ideas of what to check to diagnose this problem?
3. Why would coolant end up on the tank instead of flowing out the hose connected to the coolant overflow tank?
Thanks guys.
Jeff Fox
