Acura CL Engine Low Power

I Just Replaced My Alternator And Now My Car Has Absolutely No Power. I Think I Grounded The Alternator Wires As Sparks Flew But I Then...

While I Am Driving When I Press On To The Gas The Engine Does Not Seem To Pick Up Like It Used Too?

My Cars Rpms Dont Stay Stable It Goes Higher Then Lower And My Car Feels Like Its Lost Power After 4000 Rpms It Has No Power Please Help Me