ignition alarm

After installing a new alternator, idler pully cks and connector and cms and fixed a vacuum hose leak to the egr, I did a road test. Almost home, I made a right turn and the ignition alarm sounded until I straighten out my turn. No warning lights lit up save the check engine which I haven't cleared due to two monitors still not incomplete. That ignition alarm sounded the day the alternator crashed as well..........is this alternator bad? Put a screwdriver to the casing and listened, sounds rough but turns smoothly before installing.......
0