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Originally Posted by boomboom
I have a 98 Durango that overheats after driving for 15 miles. It has 5.9L engine. I have replaced the thermostat, belt, and clutch fan. Still the same problem. I think it may be a cracked head or bad head gasket, but when I change the oil I did not see any water in it. I also do not see any oil in the coolant. Any ideas on what I should check before I tear into the engine?
Thanks.
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How is the rad? check for proper air flow and coolant flow threw it and for hot spots.
Head gasket or cracked heads do not always leak coolant into the oil
Run the block test as outlined in upper post.