Check the OVP the first thing you do. Sounds like that. Disassemble it and resolder the solderings, use some electronic cleaner on it as well. That may help.

The KE-Jet is Running in Open-loop mode during the "warm up" cycle so the Oxy doesn't affect the cold starts.

The OVP affects the Cold start, if it fails, it'll cut the power to all KE-functions, even the cold start valve and so on.
What's more that affect the cold start procedure is the engine thermo sender unit, sitting on the cylinder head, maybe between 4'th and 5'th cylinder, injection side.

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Patrik Nilsson -83
230CE -88
230TE -87
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