1998 Dodge Intrepid 6 cyl Front Wheel Drive Automatic 125000 miles
I am having a problem with the heater on my 98 2.7 Intrepid. Unable to get hot air flow either idling or driving. It might just be me, but it sems like the air flow is cooler coming out of the defrost vents than from the dash/floor vents. Thermostat has been replaced (proper operation verified before installing with bleed hole @ 12: 00). Car is running at normal operating temperature. Had to replace gooseneck and heater coil supply tubing due to a leaking bleed valve. There apears to be NO air in the system. Heater core was backflushed, there appears to be no restriction. Hose temp on exit line is aprox. 15 deg. Cooler than supply line when fan is running. Blend door actuator was replaced last spring (motor shorted). When temp control is moved from hot to cold temp changes drastically and door can be heard moving. On-board non-ATC diagnostics indicate all is good. Engine is running at normal operating temperature, not overheating or running cold. Is there a cabin filter or inlet supply for the air that could possibly be obstructed? Air flow seems adequate, not restricted. I am begining to suspect a mal-functioning heater control blend door actuator, which was just replaced earlier this year. It may not be properly seated. The actuator is shifting but I can't verify if it is shifting properly or closing the door all of the way. This actuator is just about impossible to access. Any ideas?
Friday, November 7th, 2008 AT 6:35 PM