cold start

Hello, My new to me 13' Speed 3 threw a CEL the day after I bought it, O'Reilly scan showed a p0172 code. Additionally, whenever I cold start the car it idles rough with slight pops, but goes away once the engine warms up. I drove the car home (1000 miles Phoenix to Denver) after clearing the...

ENGINE/DRIVABILITY Idled Fine, Ran fine. Stalls on Cold starts when Temp is below 55 F Year/Make/Model: 08 MazdaSpeed 3 Mileage: 1005423 Location: NW Missouri (KCMO) Concern: Misfire on start up (with smooth idle), NEW: on cold start will stall (Will start when outside temp is +55 F) DTC's...