Three months is nothing. I have two cars that get a few new gallons of gas once every five years, whether they need it or not. In this case, however, if the battery went dead, the Engine Computer would lose its memory. A good battery can only be expected to start an engine after sitting for three weeks. By four or five weeks it will be dead.
Don't get overly worried yet until you can get out on the highway. I only know the procedure to relearn "minimum throttle" on Chrysler products, but many other cars have similar procedures. That is to drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the pedals. That meets the conditions for the relearn to take place. Until that is done, you'll have to hold the accelerator pedal down 1/4" to get the engine to start, you won't get the nice "idle flare-up" to 1500 rpm at start-up, and the engine will tend to stall at stop signs.
Saturday, January 25th, 2014 AT 8:21 PM