87 260E stalls

After having the fuel pump, fuel filter, and fuel pump relay replaced, my 87 260E is still stalling after running for a few minutes. When cold, it will start fine. If I drive a few blocks, it will begin missing and stalls. Sometimes it will restart, but it usually just cranks without any ignition sound, and I have to wait an hour before it will start again. If I start it and idle it for 15 minutes or so, it does not happen. Someone suggested the ignition coil might be bad. Appreciate any suggestions.