Leaderboard

Kind of looks like the torque converter bolt access hole cover.

An easy way to get the pins out is as follows. You need a pair of needle nose pliers to remove and reinsert the circlips, a 22mm socket on a ratchet to turn the crank and a stiff rod of some sort about 18 to 24 inches long I only remove the circlip that allows the pins to be pushed out. You use the rod to snake past the connecting rod in front of you and tap out the pin from the back of the rod you're working on. ie, snaking past 3 to tap 1 out etc. Use a 3/4" wood dowel as a drift to insert the pin. Leaving the backside circlip in allows you to tap until it seats firmly. O.

It is number 1 in the photo.

You are in the right area. Both temp sensors are located side by side on the coolant pipe under the intake. The two pin sensor is in a little further from the single pin one. The one with two pins is the one you want to change. That goes to the ECU. The single terminal one is for the gauge.