After replacing water pump, thermostat, flushed radiator it overheats at idle
REDBONE
MEMBER
2002 PONTIAC MONTANA
3.4L
6 CYL
FWD
AUTOMATIC
170,000 MILES
Van has new water pump, thermostat, flushed radiator and it overheats at a idle. Could the heater core be bad?
Friday, January 27th, 2017 AT 4:29 PM
1 Reply
CARADIODOC
MECHANIC
33,916 POSTS
If the overheating does not occur at highway speed when natural air flow through the radiator is sufficient, the best suspect is an inoperative radiator fan.