I have a combo van that has been giving Luke warm heating for a long time. I did have a split oil cooler a few years back and as you can imagine contaminated all the coolant side. I have tried flushing the heater core and coolant system a number of times. Just replaced the thermostat tonight and no better. Please help?
I'd imagine if it was the water pump the van would overheat?
I'd imagine if it was the water pump the van would overheat?