Car is in Baltimore. Morning temperatures have been 15 to 25 F. Car will start and run correctly for about 30 seconds, then start to act like it wants to die. Continues to run poorly for about 5 minutes, then runs like normal. Replaced air mass meter and ignition coil. No change. Recent work was battery replacement and oil change. I will check the fused this morning. I suspect that some component or wiring or ground is being affected by the cold causing high electrical resistance. Where else should I be looking? Thanks.