I HAVE A 2003 BUICK RENDEZVOUS...70,000 MILES, 3.4 LITER ENGINE.....WHEN I FIRST RUN THE CAR THE ENGINE TEMP WILL GO REALLY HIGH,(NO HEAT COMING FROM THE HEATER) THEN AFTER A PERIOD OF TIME, AT HIGHER SPEEDS IT WILL DROP DOWN, A LITTLE BELOW NORM, AND I WILL GET HEAT AGAIN...WHEN I GO INTO SLOWER SPEEDS IT WILL GO BACK TO HIGH ENGINE TEMPS(NO HEAT)..SOMETIMES IT WILL GO DOWN AND HEAT BACK ON WHILE DRIVING SLOWER SPEEDS BUT NOT OFTEN.. THE COOLANT LEVEL IS FINE... IT JUST STARTED THIS YESTERDAY..WANT TO HEAD OFF FUTURE BIGGER PROBLEMS TO HIGH ENGINE TEMP, BLOWN HEAD SEAL GASKET..FUSES ARE ALL GOOD ALSO.
Jan 16, 2007 at 9:40 AM