Mechanics

89 OLDS OVERHEATING

1989 Oldsmobile Calais • 4 cylinder FWD Automatic • 153,000 miles

I have a 98 Olds calais with a 2.5 liter 4cyl. Engine that is overheating. After driving under 50 miles, the coolant blows out of the overflow and the car over heats. I have replaced the water pump, radiator cap, thermostat and finally the radiator itself. It still blows coolant out of the overflow. There are no (other) signs that would indicate a head problem, (water in the oil, blue or white smoke from the exhaust, ect.). Any ideas of what might be wrong that I haven't thought of? The car has 153,000 miles on it.
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Wolfie
July 16, 2011.



That's most likely a blown head gasket. You need to get it chemical tested to determine that.

Wrenchtech
Jul 16, 2011.