#1: What is it, what does it control, what is it called..
#2: Same question as #1
#3: Same question as #1 and #2.

And any of the three sensors / w/e they are, adjustable or need to be adjusted.. or maybe some cleaning, how should they be cleaned?

#4: Is this the sensor which gives the signals to the temp guage inside the speedo? Does this sensor have to be specific for the cherokee, or are they kinda universal?

#2 looks like the Idle air control valve. No need to clean it unless its dirty, lol.

#1 - Can't remember off top of my head

#2 - Idle Air Control Valve. Allows airflow to bypass throttle plate and regulates said airflow. Can gum up. Not a bad Idea to clean it if you are experiencing idle problems also clean inside where it attaches to the throttle body.

#3 - Throttle Position Sensor. Should be a way to check it using a multimeter. It tells the computer how much the throttle is open.

#4 - Coolant temp sensor. Not for the guage (that one is on the back driverside of head) but to tell the computer what temp you are running at.

yeah number 4 tells it to run the fan or not and lets the computer know what the temp is. not the larger fan the ac fan

#1- Map Sensor
#2-Idle Air Control Valve
#3-Throttle Position Sensor
#4-Engine Coolant Temperature Sensor

Thanks Blue, I was havin a brain fart

Sokay, I have 'em myself.

Thanks guys

Okay, now does the TPS needs to be adjusted after it has been re-fit?
I've cleaned the throttle body and put them back and thats it.

AH HA! I was going to ask where this sensor was regarding a problem I am having with my Pioneer! Thanks!