after filling the coolant system fully, and driving approx 30 miles, much of the coolant has boiled out.fan clutch recently replaced. a/c fan kicking on properly. at startup, thermostat opens at 170-172 degrees. coolant appears to be flowing properly. possible radiator plug, or water pump?
my son has a 2001 isuzu rodeo sport with a 3.2liter v-6 engine. recently he has noticed a marked increase in coolant temp when idling with the a/c on. a recent fan clutch replacement did nothing to resolve the problem. same result with a coolant system flush and coolant replacement. upon accelerating to 1400 rpm or better, the temp goes back down to normal range. the radiator and a/c evaporator are free of debris. any ideas? thanks
