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I think it is a great idea... particularly while it is still warm... to unplug the EHA (As the EHA is the imput of the entire lambda/mix adjustment into the actual fuel supply, and the car should run pretty much fine without it) it is the black box on the firewall side of the fuel distributor. Then see if it continues to stall. This will dived the problem into lambda/ mix related cause (if it stops stalling) and non lambda/ mix related cause (if it continues).
There are lots of possibilitys on ether side of that divide... Coolant temp sensor/O2 sensor - ICV/ TPS/ ...
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