https://www.cherokeeforum.com/f2/how...ressure-70185/
This might be helpful to

 

http://www.jeepforum.com/forum/f11/h...7-tim-1256832/
And you check while the Jeep is running. Here's more threads on fire pressure tests. May not be exactly your Jeep but it's a idea. Your pressure is disposed susposed to be around.d 50 psi

 

Should look something like this

 

p0505 idle control sensor is the error i am getting. i clear it and it comes right back.

 

http://www.jeepforum.com/forum/f11/v...sport-1280996/
Have you tried this option. Your def getting a iac code

 

Just tried it, was it supposed to clear the error code as well? or am i supposed to clear that first then do it? I tried it, but it didn't work car actually stalled when i was slowing down at a red light which was interesting, started right back up though. Also an update on the fan, it works, but after the engine has passed the 210 mark on the temp.

Edit: so guess what i just did? i just disconnected the cord that powers the iac and guess what, she starts right up, perfect idle, i think i just might leave her like that, do you guys think that's ok? I tried the clearing thing you suggested three times each on a different ground and it didn;t work. This seems to work though, so we'll see.

 

The fan doesn't come on till Lil past 210. Mine doesn't any way. if it runs fine with our it being plugged in go for it

 

So the car decided to change its mind again, now it wont start unless the sensor is plugged in... This is making no sense at all... anyone help?

 

Is it possible that there is a wire in the harness shorting out

 

I doubt it, but that always is a possibility, having tugged on some wires to get the intake back on, How would i go about checking that? now the thing is it only does this on start up, and on some occasion when stopped at a red light or stop sign the idle just goes really low as if the car if starving it shakes a bit then dies, but starts right back up but i need to give it some gas when starting, that's both from cold start and warm start. Other times i can be driving and the idle fluctuates a little bit but not much it stays at 500 rpms or a little above just fine. makes no sense to me.

 

Have you checked the fuel pressure yet. Sorry I have not been on here much my app for cf doesn't work anymore after the update