Anyone know what the heater output temp should be for a '00 Dakota 3.9,
39k miles? With the temp knob turned all the way right I get 130º at
the floor output and about 100º with the knob straight up. I've read
in other forums people getting 155º. I'd like to get some opinions
before I pull the thermostat or flush (flush in opposite direction of
normal coolant flow) the heater core.

When fully warmed up, you should be seeing a 150 degree discharge temp at
the floor vents.

Mike