Thanks for your advice to date. When the coolant bubbles, it is a boiling hot bubble like a kettle and some steam is escaping. The top hose going into the rad is also boiling hot. I don't know what the bottom hose is like because I can't see it. There are no signs of a blown head gasket like white smoke from the tailpipe or milky engine oil or oily appearance in the coolant but the toyota mechanic says that sometimes there is a very small split that doesn't show any indicators other than overheating. I am wondering if some hoses are blocked and will ask them to try a flush next I think and check the installation of the thermostat and rad cap. Do they put on a new rad cap when you get a new rad installed?
- posted
18 years ago