Hello.
I'm the frustrated owner of a 1994 940T wagon with 188k miles on it. I've owned it just over a year and a half and in that time I've replaced:

front and rear main seals
cam seal & loads of misc gaskets and hoses.
New cap and plug wires.
Cleaned the injectors, new fuel filter.
Lots of other stuff.

Recently it started to stumble at idle right at cold startup. (usually as I shifted it into gear) Eventually this stumble led to it dying, but it would always restart. Recently it happened more and more often and then got to the point that it would die going down the road. By "die" I don't mean it would need restarted, but it would just idle "poorly" and do nothing else. I could give it the gas and it just sputters and coughs until I let of the gas and it will resume idling.
I replaced the following and it made no difference:
Fuel pump relay
AMM (junkyard)
TPS(junkyard)

It it isn't throwing any codes, yet it doesn't run. Makes me wonder if the ECU or fuel computer isn't bad.

Anyone have any ideas? Thanks in advance!