Date registered: May 2019
Vehicle: 1994 s600 coupe
Mentioned: 0 Post(s)
Quoted: 18 Post(s)
get the car scanned with a modern scan tool, the mechanic will read the live data and find out what it is.
it sounds like when it comes out of open loop into closed loop it stalls.
i.e. it may have a vacuum leak that the car can live with in open loop while rich on warmup mode,
but not afterwards when it goes into closed loop and leans the mixture a bit more.
or perhaps, it's getting hot and boiling the fuel, i.e. vapor lock,
or fuel pump/fuel pump relay/fuel filter is shot ?
fuel lines ??
but first a complete check of all sensors and live data is in order