I have a 1994 Cadillac Eldorado, Northstar Engine(Vin Y).   My Engine is running Hot if I go over 60 mph and I must keep the Heater set on High with Temp set High also.

I've changed the radiator, themostat and radiator reservoir. I having to keep adding water/fluids to keep the car from overheating. What is going on and what should I do.

The Cadillac Dealership checked it out and said the following; "Something is internally blocking the flow inside the engine. To find out would require them to open the engine. Cadillac does not open engines, they replace them."

Please give me a stratight answer to my pressing problem.

Thank you,


Donald Wooten

Optional Information:
1994 Cadillac Eldorado Northstar Engin

Already Tried:
Replace the radiator, reservoir, thermostat