NO HEAT WHEN IDELING BUT WILL PAST 2000 RPMS NEW...
1995 Isuzu Rodeo
No heat when ideling but will past 2000 RPMS NEW WATER PUMP AND THERMOSTAT, HEATER CORE FLUSHED STILL THE SAME. PLZ HELP
Wednesday, February 6th, 2013 AT 1:43 AM
Check and see if both heater core hoses get hot with the heater on and the engine warmed up to operating temp. If they do, then you have a problem with the blend air door. If they don't, it sounds like the heater core may still be plugged. NOTE: Make sure that you bleed all air from the system from the work you did and the coolant is full.