2001 Cherokee XJ, 4.0, 86,000 Miles. Stock.

Hey Guys, i was driving today and my check engine light came on. Brought it to autozone and had them read the code's for me. Turns out i have the following....
PO113 - IAT
and
PO303 - Cyl 3 Mis fire.

This crap is really starting to annoy me. I just about this jeep about a week ago. I had this problem last week too, i was driving and all of the sudden my check engine light came on, low and behold it was cyl 3 misfire. It eventually went away and didnt come back until this afternoon.

I will be changing plugs and wires this weekend, hopefully that helps a bit...

What is with the PO113 error message though, has anyone ever got that one before?

Definition for it is as follows...
* The air temperature signal is used as an input for various systems in the vehicle.
Probable cause...
* Check connector and wiring
*sesnsor open or shorted - replace sensor.

Could this IAT deal be cause my Cyl misfire, or are they in anyway related?

Thanks in advanced guys!

 

when you get those parts buy a manual it will tell you what the codes are trying to tell you

 

Where would one find this IAC Sensor? Where is it located on the truck?

 

is it iat or iac

 

iac is idle air control motor most of them you can remove them and clean with tooth brush and carb cleaner dont forget to clean the hole you pulled it out of mine looks like this it on the throttle body most auto parts sell the 30 to 50 dollars i think two small torx scrfews and pull it out

 

iat i think is intake air temp sensor dont no where it is

 

from wha ti just googled look for a sensor in the air box or tube going to throttle body

 

Jeeps nomnom on IAC's. What freegdr said was great advice.

 

Perfect! I'll give it a try. I appreciate the help.