I have a 1998 dodge ram 1500 sport. I have a problem with the heater putting out a little heat. All the doors on the heater are working fine and I have flushed the heater core 5 times both backwards and forwards. I have also changed the thermostat 3 times and checked each one before putting it in. But to no avail.
i recently disconnected the return heater hose and started the engine and it trickled out of the return hose. Is this normal?