I am having a problem with my van. I am getting basically no heat. This is not just heat inside the van. the heater core is fine, just repalced about a year ago, coolant flows through fine. What I have noticed though is that the whole system does not warm up. For example, yesterday I drove it for about
5 - 6 hours, and the radiator cap was only warm. It was NOT hot, I could basically hold my hand on it. I have replaced the termostat, and the rad cap.Any other suggestions?
BTW- 4.3 L V6 engine.
Thanks