[trebor]

I just bought an 85 944 a month ago and it was running fine until 2 days ago.
I shut it off at the local store, came out and started it again, it ran fine and went about 100 feet then it quit.
If I let it sit for a minute it starts then stalls after about 15 seconds. And it will not run for any longer than 15 seconds and the idle fluctuates and runs very rough. It appears to be running rather rich as well.
So far I have checked the fuel pressure, coil, fuses, relays, the spark plugs have been changed, everything seems to be fine. The idle speed motor, mass air flow, and throttle sensor were changed shortly before I purchased the car. Also the alternator was shot, so I replaced it yesterday hoping this was the problem but such was not the case. Any suggestions on what the problem could be or what else to check?

Thanks in advance for any help,

Bob.