Hey all, I've been struggling with constant cooling system problems with this 2000 Odyssey EX (~180,000 miles). For a while the coolant overflow reservoir has been filling up. In the past year I've replaced both heater cores. A few months back a couple coolant hoses began leaking, so I replaced them. One by one the remaining coolant hoses began leaking, so all of the coolant hoses have been replaced. After replacing those, the water pump began leaking. I replaced the water pump and timing belt. Shortly thereafter the radiator sprung a leak, so I replaced it (it was replaced a few years ago as well). All the while I can still get heat from the vents.
It sounds to me like the cooling system is being over pressurized, thus blowing all of the cooling system components. This points to a head gasket leak, and the van has overheated a few times. I'm not getting any oil loss or oil/coolant mixing, though. Does this sound like a potential head gasket failure or does anyone recommend checking something else first?
Assuming a head is warped: I saw in the service manual that the service limit on the head is warping of 0.2mm. Is it even likely that the heads will be serviceable?
Sorry for the novel, but I'm really torn about doing anymore work on this stupid van. (By the way, the van is on its fourth transmission, with signs that it might be having more tranny problems.)
I appreciate any feedback.