Check your fuses -- I'll bet they are all in bad shape, and the ones for the fan clutch and aux fan have cracked.

Treat yourself to a new pressure cap, too. Your's is probably bad, as it shouldn't boil over until the needle gets close to the red zone.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!