Lou Schneider said:Disconnecting the battery will power cycle every computer in the vehicle. You probably did this while cleaning the battery terminals.
The engine computer will reset to it's default values and will have tol re-learn the optimum parameters for your engine the next time you take it for a drive.
I never gave this much thought but I disconnect the batts all the time so they don't go dead from a parasitic draw. Food for thought. thanks