Re: 2001 Ford Taurus SE - Coolant Leak/Engine Steaming/Overheating
First, lets start cheap and easy. Change your thermostat, you can purchase fail safe units that will fail in the closed position, so it'll allow coolant to circulate all the time. I would bet you'd be in need of a head gasket, unfortunately. I had a similar occurance with an older Dodge Spirit. You could hear coolant boiling, but yet the rad was barely warm. The rad cap and T-stat were both good.
Before you start shouting and cursing over the cost of replacing the head gasket, keep an eye on your fluid levels after you change out the T-stat. If you notice coolant in the oil, or oil in the coolant it's a definite sign the head gasket is shot. Also, allowing the engine to overheat for prolonged periods will warp the head. Also, if you have the means, get underneath, clean the car really good and add some infared dye to the coolant. If it leaks, get a UV light and check under and around the engine and you'll know for sure if a leak does exist. If no leak exists, and you have to keep adding fluid, then the engine is burning it up.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!