How to clean your idle air control valve - Page 4 - JeepForum.com

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post #46 of 165 Old 03-22-2010, 09:35 PM
SnowLeopard
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Okay, I went to remove the IAC today only to find that it seems the bolts have some sort of Torx heads. Am I correct? My Torx set isn't really built for this. Do I need to go buy a set just for this job, or am I even correct in thinking they're Torx? It's hard to see even when using a mirror. Darn, but it seems on the 4.0 in a ZJ they put it back against the firewall and made it very difficult to get at. There's all kinds of stuff in the way, and I'm not in the mood to remove it.



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post #47 of 165 Old 03-23-2010, 03:18 PM Thread Starter
Haleyrz
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yeah Jonathan, they are torx. The 5.2L is accessible, but on the 4.0 on my XJ and the bf's TJ we had to remove the throttle body to be able to get to the torx bolts on it. Its not too hard to remove the TB. 4 normal hex head bolts and disconnect the throttle cable. Its kind of convenient that way in the fact that since you already have the TB disassembled, you can give it a really good cleaning too!

1998 ZJ Laredo, 4.0L, 2WD, it's boring
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post #48 of 165 Old 03-23-2010, 05:23 PM
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Thanks, Haley. I might have to do it that way in the end. Either way it looks like I might have to remove other stuff to get at everything though. There are vacuum lines in the way, and I just FINALLY got my vacuum system working good. LOL I don't want to mess any of that up. It's always something.

I hope I have a nice Saturday this weekend to work on it now. It'll give me time to get it done and take my time. I hate rushing things.


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post #49 of 165 Old 04-29-2010, 12:57 PM
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Thanks for making it look easy...it really was

Hey, I was having idle issues and stumbled on this thread. Thanks Haley for making it look easy and everyone else for the tips. You all inspired me to join!

I just cleaned the IAC on my 95 ZJ's 4.7L V8 and so far so good. Idling around 700 now and I can tell a slight difference in over all performance I guess from better air mixture.
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post #50 of 165 Old 04-29-2010, 01:02 PM
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Quote:
Originally Posted by Chango08560 View Post
Hey, I was having idle issues and stumbled on this thread. Thanks Haley for making it look easy and everyone else for the tips. You all inspired me to join!

I just cleaned the IAC on my 95 ZJ's 5.2L V8 and so far so good. Idling around 700 now and I can tell a slight difference in over all performance I guess from better air mixture.
Fixed.....

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post #51 of 165 Old 04-29-2010, 01:15 PM
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My bad, I was just looking at the oil capacity on the owners manual.
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post #52 of 165 Old 04-29-2010, 01:59 PM
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One thing... I broke something. Can you tell me what it is?

While making my way to the torx bolt on the drivers side that holds the IAC in place, this thin tube snapped in two places? It looks like it is coming off of a sensor of some sort and I haven't been able to find it on an engine diagram. Can anyone identify it for me so I can replace it? It didn't interfere with my starting and driving after replacing the IAC...

Thanks
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post #53 of 165 Old 04-29-2010, 04:45 PM
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Looks like vacuum line - I bet your vents are on full defrost.

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post #54 of 165 Old 04-29-2010, 05:52 PM Thread Starter
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It's an evap solenoid. I believe it goes back to the tank but I'm not sure. Have you smelt gas since it happened? Any check engine light?

1998 ZJ Laredo, 4.0L, 2WD, it's boring
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post #55 of 165 Old 04-30-2010, 06:46 AM
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I have not smelled gas nor is there a check engine light for it. Can I fit it with replacement tubing or is this even an easy fix? Might I have to replace the whole line?

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post #56 of 165 Old 04-30-2010, 09:26 AM
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If it snapped like that, I'll bet you've got a lot of other lines that are rotting and getting brittle too. May be able to save some by using petrolleum jelly on them but with a 1995 (15 years old) it may be time to do a full inspection on all of your hoses.

This thread along with the TPS thread really saved me some heartache and dollars when I first got my Grand back in August.
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post #57 of 165 Old 04-30-2010, 09:40 AM
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Thanks Shadetree. That's a good point.

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post #58 of 165 Old 06-13-2010, 04:55 PM
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Great write-up! That fixed everything!
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post #59 of 165 Old 06-13-2010, 10:35 PM Thread Starter
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glad i could help!

1998 ZJ Laredo, 4.0L, 2WD, it's boring
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post #60 of 165 Old 09-16-2010, 05:35 PM
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Thanks, Haleyrz. I hope this fixes my "does not want to start and keep running unless I have my foot leaning on the gas" problem

1998 XJ - "El Jefe" 4.0L | Superlift | Dunlop | Cragar | Bushwacker | Hypertech | OR-Fab | Hi-Lift | Pilot | Smitybilt |
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