Have the current draw by the fuel pumps checked -- a bad pump will pull too many amps.

Have the idle control valve and associated rubber hoses checked -- a big vacuum leak will cause this.

Check the cap, rotor, wires, and plugs -- a loose rotor will cause all kinds of trouble, and they are known to fail and break off. When it stops turning, the car won't run at all, and may make all sorts of noises when you attempt to start it because the plugs may fire at random.

Peter

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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!