enticing more heat out of my 1995 intrepid heater?

Question

Before I start, I have checked the heater core, gone through the entire cooling system, etc. I have run the heater diagnostics and they say all the doors and valves are working correctly. I still feel a large amount of air coming in the duct in the passenger side external air intake. I tried to seal it off hoping that it would recirculate passenger compartment air but it bogs the heater fan down too much. I am thinking there is a door other than the blend door that switches recirculating air to fresh air that isnt working. Maybe the sensors are working correctly but the door has a hole in it or has come loose. Any ideas????? The heat eventually gets somewhat warm after 30 minutes of running but it just doesnt seem to get very hot.

Yes new therm, new cap, etc! Good thought tho stebo! I was wondering if the pump is slipping. I noticed that the pump runs off the back side of the timing belt and only is driven by a third of the pully. I have ruled it out tho since the car doesnt overheat....

I done flushed it out and flushed the core seperately....

Good idea Robert! The only thing I didnt change were the heater hoses...

Answer 1

Have you put in a higher temp thermostat? That can help the problem.

Then chances are that you have a vaccuum leak that is messing with your intake vent.

Answer 2

All vehicles are similiar in the heatin systems: all valves and directional doors are operating correctly; engine at normal operating temperature; no leaks; and fresh coolant in the system. Anti-freeze (coolant) circulates through the engine and radiator and some contaminates could have built up in the hoses to and/or from the the heater core. Flush out the cooling systems and refill with fresh coolant.

Answer 3

have you had the water pump tested to see if thats the cause reason being i am having the same type of problem with my car

Answer 4

Have you changed the thermostat?