Continuity mistake: This is during the Special Edition's chip removal scene. There is a point where the shot is of the Terminator's POV. In the foreground a pair of pliers moves vertically through the frame. However, in the "reflection," Sarah Conner is already tinkering with the Terminator's head. Apparently Linda Hamilton (who played Sarah) and her twin sister were out of synch for that shot. (01:11:00)
Revealing mistake: When Arnold begins to beat up and throw around the workers of the hospital, the African American worker is thrown into a window. If you look carefully you can see that the window he is thrown into is a different kind of glass than the other windows that surround it, indicating that this is not real glass. You can also see that none of the other window frames of glass on the inside of the corridor. There is just the metal frames covering the windows. In some shots later in the scene when the T-1000 is chasing them down the corridor you can see the bits of glass that were left over from before have disappeared. (01:01:05)
Continuity mistake: As the T-800 is weaving around the back of the semi-truck just before the end of the aqueduct chase, there is a panel of some sort dangling around the back along with the licence plate. From the far shots the licence plate is gone, and the panel is bolted on on. This changes about two times. (00:37:20)
Visible crew/equipment: In the scene immediately after the Truck vs Harley vs Dirtbike chase where John Connor demands that the T-800 pull over for a "time out", as they pull to a stop and start to have a conversation the boom mike is visible reflected in the shiny black mudguard of the Harley's front wheel moving back and forth between the actors as they say their lines. (00:39:10)
Continuity mistake: When Sarah runs into the corridor to smack the guy with a broom handle, we see a close-up of him having just emerged from a store-room and turned round, standing right next to the door. There's then a very brief shot of Sarah swinging towards him, then a white flash. When we cut out to a wider shot, he's suddenly in the middle of the corridor, with no time to have moved there. (00:52:40)Jon Sandys
Visible crew/equipment: When the T-1000 is chasing John on his motorbike aboard the truck, as it is going to hit two cars in the traffic you can see in the shot from the truck's side the camera car used for the frontal shot on the background, and simultaneously, as the camera changes angle, you can see a camera protected in the box attached on the side of the truck used for the previous shot.
Other mistake: When the aqueduct chase has finished, and the T-1000 strolls out of the fire, the semi is hardly burning in the background. Considering that the semi has just violently exploded, and the small bridge it just crashed into was nearly flattened, it seems odd that it shouldn't be burning (very tricky to see, best use zoom in). (00:38:40)
Continuity mistake: The Winchester 1887 lever action rifle is shown with different levers as the Terminator needs them. When on foot, the lever is of a standard narrow type and when on the bike, it has a large lever loop that also has a metal hand plate attached to it, making it easier for Arnold to flip-cock the gun when reloading. (00:32:20 - 00:36:35)MGD