E 320 Coupe hard starts

[usaustria]

My 1994 E320 Coupe auto euro specs (60kmls) will crank but not start intermittendly. Once it fires it runs normal and nothing can be found wrong. DC changed a connector to the fuel pump but then the problem reoccured. Then the patriot alarm was removed; next the wirering harness (insulation partially gone) was replaced. DC covered part. After reocurrence 3 coils including connectors replaced. Problem persisted. Then DC suggested to replace the ECU (VDO) at my risk. I sendt it to a specialist shop to check it came back as ok. A little late I found this forum. Instead of towing the car back to DC I resoldered all connections on the Siemens OVP relay # 520 52 45. Car works like a charm.....so far! Even secondary problem went away: when starting up hot the engine would stall when breaking and rolling to a traffic light for about 1 or 2 miles. Then this problem disappeared.

Anybody can tell me if this can be connected????

Thanks

Reinhard