OVP relay, fuel pump relay, and fuel pumps, in that order.

A flaky OVP will cause all sorts of trouble, but intermittant stalling while driving that gets worse is either a bad fuel pump relay or a bad fuel pump. Relay is $60, replace it, don't mess about.

OVP will usually also cause instrument problems like a bouncing tach, flashing SRS lamp, etc. Replace that too, it's dead.

You should check the current draw on the fuel pumps (there are two) and replace if too high -- don't know the spec off hand, but I believe it's been posted. Usually a bad fuel pump just gives up the ghost and you are completely dead, though.

Last, clean the idle control valve and replace the two rubber hoses on it -- they get old and leak. This causes stalls on deceleration ONLY as the idle valve won't open back up fast enough as you slow down. Much worse on hard stops than gentle ones.

Had the same problems on the TE, cured by a new fuel pump relay.

Much cheaper than getting hit.

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!