In the last few weeks I did my 180k service. New toyota parts; timing belt, tensioner pulleys, water pump and thermostat and coolant. Now my 2000 lc is running 10- 15 degrees hotter all the time (which really kills the mpg). With the process of elimination (and cash), changed out the thermostat(#2) and even replaced the fan clutch and rad cap. I changed the thermostat again because it was acting like a stuck tstat. I know the fan is working cause my scanguage fluctuates the temp but won't maintain the 195 degree temp I had previously. Hoses are rock hard with pressure but no loss of fluid. After a couple of days of no driving the hoses were still rock hard and under pressure and when I removed the rad cap a gush of coolant flowed out like being hot. Am I chasing air or something worse? Will a new waterpump have different characteristics?
