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Old 10-23-2010, 05:47 PM   #17
AusTx68
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Join Date: Nov 2008
Location: Italy
Posts: 1,278
Re: 700r4 Overheating

Ok, so I think the problem is worse than I thought. Perhaps a blown head gasket. I've checked everything with the cooling system. Replaced thermostat, radiator cap, flushed system, elevated front of truck during refill and made sure it topped off at the thermostat and sensor openings. Started engine and waited for thermostat to open then topped off with water. Took it for a drive. Within 5 miles it started overheating and I have a white frothing foam at the cap. Let it cool then drove home. Left engine running and checked coolant level. It was down 6" into the radiator. Topped off again while running and allowed it to overflow to remove foam. Took out for a drive. Again it got hot. Drove home and check coolant level while running. Again, coolant was low in radiator and there was lots of white foam. No water in coolant and there doesn't appear to be oil in the water. Any guesses???
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