Quote:
Originally Posted by merik2005
hi folks my father in law has a 99 eldorado that keeps overheating. he has had the water pump,thermostat,radiator all replaced and there isnt any water in the oil so we dont think its the heads or gaskets! any ideas on what could be causing this
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From your description, and the year of the car, my experience with these cars is that you indeed have a head gasket problem. You wont see water in the oil with these. The best way to find out is to find a shop with a tester to check for hydrocarbons in the coolant. Or you can buy a tester from a parts store. It's a tool that uses a blue colored liquid in it and when the HC's are detected the fluid turns yellow. If that's the case you're looking at around 4k to repair.