why is my renault laguna,2l,94, overheating after 7miles?

why is my renault laguna,2l,94, overheating after the first few miles?fitted new thermostat recently.bought the car recently.someone had taken out the old thermostat.tried to bleed it as well as i could.
paul thoma, November 2004


done
check radiator fins, try rad flush and clean oit system, these cars had a tendency to sludge in cooling system

stuart, January 2005
change the fan switch, if thats not it then change the radiator.

ollie - laguna, turbo :), January 2005
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