Lost connector

[OU1]

So I had to take the head out of my car to inspect it to ensure it wasn't damaged after accidently dropping something in one of the lifters.  I put it all back toget her but I have a connector running off of my wire harness that I can't seem to find the home for.  I'm working on a 94' Lexus Es300.  Pictures are posted hopefully someone can help!

[TrevC]

usually the odd connector will be floating around, intended to connect to a component which isn't on that particular model of car/engine but the wiring loom just carries it regardless. If you move it in an arc and look for anything it can fit within that movement area then if not and everything works fine then its a dummy connector.

It also doesn't look as though its been connected to anything in a long time looking at the dirt that has built up in it

[OU1]

Well my vehicle is running extremely rough, idles at just above a 1, and I have to turn it over 2-3 times to get it started and Rev the engine for about 3-5 minutes to keep the car from dying.  The acceleration is extremely sluggish and it seems to be lacking horsepower pretty badly.  I thought it might be a fuel issue but once the engine is warm it will start first time, and only runs rough on occasion at that point.  I've been searching for answers to this problem with little luck and I thought it might have been this plug.

[TrevC]

Sounds like a Coolant Temperature Sensor issue...whatever that connector fits is a socket (female) connector...not likely to be a sensor (as they are predominantly male connections) but more like a wiring harness connection.

It will have to be within the range of it's length but worth checking another one within that range hasn't been plugged in its' place accidentally...easily done!

[OU1]

I thought perhaps an air leak but after spraying starter fluid around the intake and hoses I know that is not the problem.  I will look into the coolant temp sensor.  Perhaps their is a connector I forgot to plug in.  Had to dismantle half my motor to get the head out, obviously did not take enough photos haha.  I appreciate the help.