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I dont know what is going on with my car. I have a 01' E-shift Yesterday my Oem battery died, I replace it with a bosch one..... now my car seems to hesitate between 1st and 2nd gear.... anybody hear of this? if so how can I fix it? Thanks everbody

-Eric
 

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Just installed a new battery and hesitating.......drive the car for a while, maybe 60 miles or so............ the computer has to relearn.
 
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Drive the car aggressively for the first few weeks after a reset to the computer. It will learn your driving habits and if you want more response your computer will compensate by adjusting the air/fuel mixture. Conversly, if you want better gas mileage and dont care about performance, drive it like a lil o lady and your mileage will improve.
 
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