1993 chevy camero- started with overheating, changed water pump and thermostat, flushed radiator and it didn't overheat for almost a year - now there is THICK, THICK, orange (rusty) residue in the radiator, flushed again and it's back again and overheating immediatly. (the oil still looks good though!)would a new radiator help at all? is it a head gasket?
The rust is probably in the engine. There are many little pockets, water ways, water jackets (around the cylinders), etc, so getting all the rust out without dunking the block and heads in a cleaning tank is about imposible. I would recommend giving it really good flush every 4 to 6 months. I would try flushing the radiator before replacing it because it is probably not rusted, even though it is full of gunk.
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