Hello! Have a problem with a Toyota previa 2.4 gasoline Automatic. The vehicle gets hot fast when driving and starts to cook, but if you switch on the heater and heating it is normal temperature.Head gasket would probably blow in the water circuit in the cold condition too? Can this vehicle be specially ventilated or just ventilated? Vicolafter I don’t know if you can also control something.If it should be the head gasket you have to remove the motor complete or not. Thanks for any advice