2005 lexus gx 470. on 2005 Lexus GX470

my temperature gauge goes way up when standing at a drive thru with the motor running. But returns to normal when I begin driving. What can cause this problem?

by in Houston, TX on July 14, 2012
1 answer
ANSWER by on July 19, 2012
radiator cooling fan not working. have circuit tested.
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