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What is your question?
My 98 Eldorado is over heating. We've pressure tested, at 16#, tested for emission gasses, negative , changed radiator cap, thermostat, and radiator. Still over heating. Cooling fans seem to only run with ac on. Seems to to cause back pressure to force coolant out the overflow. Have driven 120 miles in cooler weather with no problem then 45 miles and it over heats. Then 18 miles with no problem and 12 miles it overheats. It is very erratic. What could the problem be?
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