Temp Gauge Not Working, What could be wrong? Options

[Nartanian]

So after a year, my Celica officially runs good as of today. Only problem is my temp gauge reads cold. I think everything is hooked up. I think my sensor is hooked up right? Not sure...




I found a cord in the back that was not hooked up though. I don't know where it goes...



This plug *edit: this plug goes the egr*



Any input will greatly be appreciated since winter is on it's way.

This post has been edited by Nartanian: Oct 7, 2009 - 4:55 PM

[Nartanian]

This morning I double checked all the wiring and everything is plugged in. I found out that the missing wire that was hanging in the picture goes to the egr, so that has nothing to do with the temp gauge. I'm sure the cluster works just fine because prior to starting the car the needle moves up a bit. I have not reason toe believe the cluster is faulty. What I also did this morning was replace the temp sensor I believe. I unscrewed the 2 nut that hold the thermostat housing to the head and replace that thing in there. I lost quit a bit of coolant doing that. I don't know if I put it in right though because I didn't replace the rubber seal around it, and it was a little loose too. I just cramped in the sensor as best I could and tightened the thermostat housing over. It was pouring outside so I was rushing to get it all done. Anyways it didn't help. I don't know if it because I put it in badly or if it's a wiring issue. Hope this helps so I can get some good advice.