I have a 2001 grand jeep cherokee laredo with 149,900 that runs hot I have had the fan replaced, had a new relay switch replaced, thermostat and now the dealer is telling me that the head is worped had it taken to a machine shop sand it down, and the mechanic put everything back together and I get a call saying that it's still overheating. What could be the problem. Everything else according to the jeep dealer is doing what it's suppose to be doing, so they are sending the head back to the machine shop and that's where we stand today?
Any ideas
If it was overheating at freeway speed then it is a clogged radiator. Another cause of overheating is a timing that is retarded. These can be caused by worn timing components etc, although a possiblity it is highly unlikely on your car.
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Is the radiator clean? Often the cores can be blocked by bits of old gasket and crud if work has been done to the motor. Mud can sometimes cake into cores too so a backflush may not remove it. Best way to clean is to take off a tank and clean them properly.
PLUGGED RADIATOR CORES?
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