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Topic Review (Newest First)
04-30-2013 02:51 PM
cballou
Quote:
Originally Posted by ChrisJeepTJ View Post
I did not notice a gasket or silicone on my throttle body. My IAC did have silicone type sealer and I'm no expert on RTV sealer but I'd imagine it'd be ok as long as it doesn't permanently adhere the sensor to the throttle body. Your diff cover RTV may be a bit strong for this application.
Thank you... did you use anything when you reassembled yours?
04-30-2013 12:43 PM
ChrisJeepTJ
Quote:
Originally Posted by cballou View Post
Quick question...

In the write up on the jeep forum posted above towards the end they mention "with new gaskets, or silicon, reverse the above and put back together." Seeing as you have done this before I'm hoping you can help. Does that mean that the IAC is sealed on with a gasket/silicon? If that is the case can I use the same RTV that I used for my diff covers?
I did not notice a gasket or silicone on my throttle body. My IAC did have silicone type sealer and I'm no expert on RTV sealer but I'd imagine it'd be ok as long as it doesn't permanently adhere the sensor to the throttle body. Your diff cover RTV may be a bit strong for this application.
04-30-2013 12:04 PM
cballou
Quote:
Originally Posted by ChrisJeepTJ View Post
I cleaned up my throttle body and IAC over the weekend. I did it last summer too. I can't explain why, but every time I do my auto jeep runs smoother, especially noticeable on the highway when decelerating. I don't get whether it's the IAC, TPS or just the TB itself, but before cleaning the jeep feels like it lurches forward when I take my foot off the gas. Post-cleaning, it feels like it's coasting and buttery smooth.
Quick question...

In the write up on the jeep forum posted above towards the end they mention "with new gaskets, or silicon, reverse the above and put back together." Seeing as you have done this before I'm hoping you can help. Does that mean that the IAC is sealed on with a gasket/silicon? If that is the case can I use the same RTV that I used for my diff covers?
04-30-2013 08:35 AM
ChrisJeepTJ I cleaned up my throttle body and IAC over the weekend. I did it last summer too. I can't explain why, but every time I do my auto jeep runs smoother, especially noticeable on the highway when decelerating. I don't get whether it's the IAC, TPS or just the TB itself, but before cleaning the jeep feels like it lurches forward when I take my foot off the gas. Post-cleaning, it feels like it's coasting and buttery smooth.
04-29-2013 09:56 PM
Nardoclark Everyone, thank you very much. Recently my vacuum line fell of the side of the engine. I re-installed the vacuum line and then my engine idle started to surge. When I slowed to a crawl and the transmission shifted to the lowest gear the idle is surging to over 1000 Rpms then it settles at 750-800 rpm. I think cleaning the IAC valve will solve the problem.

Thanks again!
04-29-2013 09:48 PM
1rbotma heres a thread about cleaning the IAC. its a different forum but hopefully i dont get shunned for posting the link.

Cleaning IAC and Throttle body write up (for dummies) - JeepForum.com
04-29-2013 09:36 PM
Huelsmma
Quote:
Originally Posted by Nardoclark View Post
Thank you very much for the photos. Does it mount into the base of the throttle body?

Thanks again!
Yep...bottom right corner of that 2nd pic. FYI...there was only 1 torx screw holding mine in. I think I remember when I was doing mine, someone stated things may have changed a little in the newer tjs. My iac didnt look like any of the other iac photos I had seen out there.
04-29-2013 09:11 PM
Nardoclark Thank you very much for the photos. Does it mount into the base of the throttle body?

Thanks again!
04-29-2013 08:57 PM
Huelsmma
Quote:
Originally Posted by Nardoclark View Post
I have a 2005 jeep wrangler, 6cyl. And I want to clean my IAC valve but I don't know what it looks like. The cleaning instructions are simple I just need to know what it looks like. Can someone take photo of the IAC valve and share with me?

Thanks for your help!
This is what my 05 IAC looked like
04-29-2013 08:50 PM
Nardoclark I have a 2005 jeep wrangler, 6cyl. And I want to clean my IAC valve but I don't know what it looks like. The cleaning instructions are simple I just need to know what it looks like. Can someone take photo of the IAC valve and share with me?

Thanks for your help!
12-29-2012 07:31 PM
sierchio
Quote:
Originally Posted by Jerry Bransford View Post
A bad IAC will not cause a TPS code and usually, the only thing that needs to be done with the IAC is to clean it, it seldom actually needs to be replaced. Clean the IAC as described above & if that doesn't fix the problem, replace the TPS. The TPS cannot be cleaned like the IAC can, the TPS has to be replaced when it goes bad.
Ive replaced the TPS three times... twice with ones from NAPA and then with one from the dealer... Figured maybe the IAC was next step...
12-28-2012 12:58 PM
Neil F.
Quote:
Originally Posted by MadMike84 View Post
I have the same tea kettle noise I think mine is coming from the alternator.
http://www.wranglerforum.com/f5/vacu...le-202004.html

site:wranglerforum.com wranglerforum.com, tea kettle, whistle - Google Search
12-28-2012 12:28 PM
Jerry Bransford A bad IAC will not cause a TPS code and usually, the only thing that needs to be done with the IAC is to clean it, it seldom actually needs to be replaced. Clean the IAC as described above & if that doesn't fix the problem, replace the TPS. The TPS cannot be cleaned like the IAC can, the TPS has to be replaced when it goes bad.
12-28-2012 11:50 AM
sierchio So I'm having an issue with the TPS... at least that's what the CEL code is telling me... I unplugged the IAC and ran it out the block and it seemed to drive a little better... but it's still stumbling when I shift into second and third and accelerate... would replacing the IAC fix this issue? Would a bad IAC cause a TPS code?
12-27-2012 01:22 PM
MadMike84
Quote:
Originally Posted by MadMike84
I have the same tea kettle noise I think mine is coming from the alternator. I wanted to tinker alittle bit today so I figured I'd clean the iac. Broke the bottom bolt out about mid ways. A new iac is 70$ so I just drilled the piece out and put a new bolt through it. Didn't help anything. I dont listen. If it ain't broke don't fix it . Haha
It should be " if it ain't broke it will be by the time I'm done with it"


It did actually help out a lot cleaning the iac not for the noise but I cleaned the throttle body and iac and WOW way smoother throttle and shifting seems a lot smoother
12-08-2012 06:27 PM
MadMike84 I have the same tea kettle noise I think mine is coming from the alternator. I wanted to tinker alittle bit today so I figured I'd clean the iac. Broke the bottom bolt out about mid ways. A new iac is 70$ so I just drilled the piece out and put a new bolt through it. Didn't help anything. I dont listen. If it ain't broke don't fix it . Haha
It should be " if it ain't broke it will be by the time I'm done with it"
09-15-2009 02:31 PM
Rubi Unlimited Could these same symptoms show themselves after the vacuum hose for the dash air controls comes loose and you replace it on the side of the engine.

Yeah I know the thread is old I found it via google search.
10-17-2008 01:01 PM
wavebacktothetj well thanks for the help im cleaning it this weekened hopefully that noise will cease, Jtalar im glad at least somebody finds my rig sounding like sissy tea kettle is funny, go ahead laugh it up
10-17-2008 11:18 AM
jtalar I have to say I about fell out of my chair when you said that your rig sounded like a tea kettle......., I'm still laughing
10-17-2008 09:08 AM
Jerry Bransford Can't say what the tea kettle noise is from, it could conceivably be the IAC valve letting air leak past it but I just don't know for sure.
10-16-2008 10:50 PM
wavebacktothetj wow thank you again Jerry I appreciate it do you think this is what that tea kettle noise is?
10-16-2008 09:20 PM
dbbd1 You are the man again, Jerry!
10-16-2008 07:59 PM
Jerry Bransford Held on by two small torx-head screws, the IAC comes off very easily. Just make sure to use a torx-bit that is sharp and in new condition so you don't strip them out, they have some Locktite on them so they will be tight and not real easily removed.

Once it is off, spray its solenoid actuated plunger and the hole it fits into on the throttle body with an aerosol throttle body cleaner. Then use a soft toothbrush and rag to finish gently cleaning the plunger. Don't push/pull/rotate the plunger, treat it gently.

Once it is clean, use the rest of the TB cleaner on the inside of the throttle body and bolt the IAC back up again. Be careful to not strip the torx-head bolts out by always making sure to be holding the torx-driver square to the bolt head and firmly in place so it can't slip out while you're removing it or screwing it back into place. The IAC unplugs from the harness fairly easily to make it easy to clean it.
10-16-2008 06:04 PM
wavebacktothetj
Cleaning IAC valve

I have a problem with my 04 sport sounding like a tea kettle after a couple of minutes driving when I let off the accelerator and slowly goes away after a few minutes, some of you guys suggested cleaning my IAC valve ive never done this before and I need to know where it is located with and how to clean it and reinstall it, just wondering if it is difficult and me not knowing much about jeep maintenance would this be ok for me to do im a fairly mechanical guy im just new at this, any advice?

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