You should clean the hole in TB too. Where the plunger mates.
I did do that, and cleaned the throttle body while i was there. So to add to the writeup:
Make sure to clean out the hole the IAC goes into.
thanks for clearing up the WOman part, lol. And its relatively the same place on the I6, but a PITA to get off! The bottom bolt has a bunch of crap in front of it that makes it really really hard to get to. At least its that way on my boyfriends TJ. I went to clean his and our small collection of tools cant get to it.
On the I6 it's easier to just take the whole throttle body off after disconnecting the wires and cables. Then you can pop the IAC off with ease and clean the whole mess. I just did this on the 02 WJ yesterday, it had the high idle on start-up thing going. It also had an awesome oil leak dripping oil on the exhaust pipe. Found loose bolts on the valve cover and oil pan. Don't know which caused the leak, but after tightening it all up the leak is gone. I have fixed more stuff on that 02 in the last week than I ever have on my 95 Ford F150, and I have had that truck longer than my 02 has been alive....
yeah it should, i'm just not sure where exactly it is on the WJ...i've never looked at a 4.7 in person. It will be on the throttle body somewhere. On my 5.2 there are 3 sensors on there. Just google 2000 Grand Cherokee idle air control valve and try to get a part number to google that number so you can look at the shape, or maybe the search will come up with more info and pictures than my search for the 5.2 did.
thanks for the write up, i did this on Sunday...idles so much smoother now, i think i burned my hand getting the thing out though
Can't wait to get started, but my wallet can......
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94ZJ 5.2 Red; Rusty's 3" Coils,Skyjacker hydro's, Brush Guard, Custom Rear Bumper, Custom Roof Rack, KVG Quick Discos, 31-10.50-15's DAYTON TIMBERLINE A/T OBA 2 Gallon tank
Can't buy it? BUILD IT!! Do it cheap too cuz your in college
I just went out and did mine. My IAC wasn't too bad, but my throttle body needs help. Badly. All in below the throttle plates is BLACK!!
By the way, I took my Dremel tool on the lowest speed possible with a brass wire brush in it to my IAC. Worked like a charm. Took all the deposits off in a matter of seconds, but was soft enough not to damage the plunger at all.
Can you explain to me how you will break it if you push or pull on the pintle ?
If I understand the inner workings correctly, it's a gear driven servo motor that actually moves the plunger. On a worm gear. Like a garage door opener. If you force it, it will strip the drive gear out.
Would this apply to a 4.7 WJ? Mine starts up to 2600rpms and takes a little while to idle down. With the flo though it scares people on start up.lol
On the 4.7L both the IAC and TPS are located on the right (driver) side of the TB. You will see two wire connectors going into the side of the TB...the one with the white end is the TPS and the other is for the IAC. Simply disconnect the connector and use a torx driver to remove the two screws holding it on. For a more thorough cleaning I would just recommend removing the TB...especially because just getting to the IAC requires removing the resonator box anyways.