slow traffic.? I HAVE A 2000 OLDS INTRIGUE.LAST SEPTEMBER MY CAR STARTED TO OVERHEAT AND I TOOK IT IN FOR SERVICE RIGHT AWAY.THEY RUN ALL TESTS AND COULD NOT FIND ANYTHING WRONG WITH ELECTRICAL, THERMOSTAT WAS REPLACED, FLUSHED THE RADIATOR AND REFILLED IT, WATER PUMP WAS CHECKED AND REPLACED THE GUSKETS. TWO MONTHS LATER I GET THE SERVICE ENGINE SOON LIGHT ON AND THE NIDDLE FOR TEMPETURE GOES TO 3/4 WHEN THE TRAFFIC IS SLOW AND ALSO WHEN A STOP . BEFORE I TAKE MY CAR IN I'LL LIKE TO KNOW IF ANYONE ELSE HAD THIS PROBLEM WITH A SIMILAR CAR AND WHAT WAS DONE TO FIX THE PROBLEM. THANKS