My '93 ES300 has had a problem causing overheating in certain situations
(long trips) About six months ago, I took the car in and the mechanic
flushed the radiator and replaced the thermostat. The car has been working
fine up until yesterday, when I took a trip up to a major metropolitan area
on a hot day and had to pull over several times due to temp gauge shooting
up. On shorter trip (up to 30 miles) the temperature does just fine. I'm
going to take it in next week, but I was just wondering if there was
anything I could check myself before doing so. Car has plenty of antifreeze
Check to see if coolant level is being maintained. If not, you may have
leak in radiator seam. Check along edge of top/core seem for evidence of
Leak causes loss of pressure which lowers boiling point and allow fluid to
Happened on my SC400 a few years back.
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