Question about 1990 Toyota 4Runner
V-6 while highway traveling at 60mph vehicle does not overheat ---why does it overheat at 70mph---has new fluid and new thermostat????
This could be the water pump that is malfunctioning. i would also check to see if the cooling fan is operating as well.
Posted on Mar 06, 2009
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Posted on Jan 02, 2017
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