My wifes 190e did the same thing for months , then it progressed to engine stopping at random corners , then at every traffic light .

Both the Fuel pump and the OVP relays were pulled and resoldered , problems are all gone.

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'72 240D
'76 300D
'88 300sel
'40 Chev pickup , the shop hack.
'73 Monte Carlo Landau, for "Super Chevy Sunday"