93 940 turbo Rough idle & intense sputtering

[NikkiH225]

Hey all! You'll have to excuse my car vernacular as I am quite inexperienced.
I recently acquired my 940 turbo and it ran great for a while.
Now it idles very rough bouncing between 750-1500rpms. Sometimes it is so low that i fear it will die on me. It also bucks a little.
When accelerating, it's as if something is holding the car back. It accelerates very roughly and even once I'm cruising around 60 it's as if the car is missing the entire time.
It seems to run better when the engine is cold.
I know this isn't much to go on, but any help would be appreciated. The only leads I have from perusing the web is possibly coils or fuel pressure regulator.
Thank you!

[lummert]

Diagnose the engine temp sensor. Also diagnose the AMM. The crank position sensor is something else to check out. The distributor cap, rotor and spark plug wires may need checking. Actually, the engine may need a Stage Zero tune up. Last but not least, the car only has one coil.

Stage Zero is doing all the maintenance items, such as distributor cap, rotor, spark plugs, spark plug wires, timing belt and timing belt tensioner. Just don't go throwing new parts at it without doing a little research on the subject.