i have a 99 civic si w/186k miles on it. Haven't really driven it for the past month due to so much snow and roads not cleared (the car is pretty low). As a result i usually just start it up once/2x a week for 20 min. Temps were below 30degrees...

Each time, the car would start up and run for 20 min and go up/donw the street where i live. Lately, last 3x the car would start normally and then die after 5 min. Had a 4yr old battery and replaced with brand new one. Tried to start it up and not turn over. Cranks but not turning over. Earlier in the day it did before it died after 5min...

Is it my alternator? Ignitor was replaced 3yrs ago. any help is appreciated.
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