runs rough almost "choking", sometimes won't start at all

[ladybugga]

I have a 1990 Sable Wagon (automatic), which has been running rough in the extreme cold weather we've been experiencing lately, (-45 degrees celsius). So I thought maybe that was the key factor. But the weather has warmed up some, but my car still runs rough. When I start it, I basically have to stay with it and keep my foot on the gas pedal. It wants to stall almost as if it's "choking". When it does stall, it usually won't start again, although the ignition turns over it still seems like it's "choking". The battery is good and I had no problems last winter. Any ideas on what it could be? Thanks.

[pakman1]

hi
i have a 2000 sable and it has been running rough and now it will not start
i was wondering if u received any reply to your post?