I am new to this site, and this is my first Saab. The other day on the way home from work, I noticed trouble with shifting and power loss.(Automatic transmission). There was an intermittent whirring sound and tachometer was fluctuating between 0 and 4,000 rpms. The check engine light started flashing, and I pulled over. Some black smoke from the exhaust, as well. I replaced the spark plugs with the proper NGK brand. No change. I have a generic scanner and DTC P1300 came up. I don't have much money, is there any way I can get it home (about 6 miles) until I can afford repairs. Any advice is much appreciated. Thank you.