Can anyone help?
200TE 4V AUTO 1993 Type 124T

My car's tick over has dropped to 500 revs and stalls at road junctions when I take my foot off the gas.

When first starting from cold, unless I hold 1500 revs the engine will stop.

I'd start with a search on OVP (overvoltage protection) relay.

Sixto
93 300SD