Had my motor rebuilt on my 98 mustang gt sohc .governor kept making the car lurch due to speedo mechanism. I disconected it. Seemed to be fine until you stopped. It would konk out. Would start back up. Until the other day. Theft mode on alarm came on and wont reset. I took the whole thing out. Still flashing theft and wont start. I put it back in . nothing works to reset it. Keeps flashing and wont start. HELP ME PLEASE.