1990 944 S2 cab.
I was driving home when she started to sputter, then when I pressed the gas it dropped and I was hard pressed to get 15 mph out of her. I finally got to a safe place where I could stop. I let her rest a bit and I was able to re-start. She was fine again for a little bit, when the symptoms came back. I was barely able to get her home. Now she will not stay started. She turns over and acts normal for a second and then shuts off.
My first thought was the fuel relay DME. Got a new one and replaced, no change.
Next I pulled the fuel filter and found it was the original dated 4/14/1989.
I've decided to go ahead and replace the pump as well while I have everything apart.

Any other suggestions? What else should I go ahead and change while I'm at it?

Thanks in advance, Chris

Sounds so much like the DME relay. Search this forum for the Relay by pass wires to make 100% sure, just in case you got a bad relay.
Next is fuel pump and filter. If none of those, try the fuel pressure damper and regulator on the fuel rail.

Best of luck getting it fixed!

I've ordered a solid state DME and new fuel pump arrives tomorrow.

Well, Monday I completed the install of the new fuel pump and she can back to life. I then went ahead and changed to new silicone vacuum lines. I also added a new solid state DME relay.
She runs and sounds better than ever.
Hopefully no more fuel issues!
Thanks for all the help and suggestions!