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  #1  
Old 12-07-2012, 04:31 PM
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I A C Cleaning

I'm gonna clean my iac sensor. I'm hoping a few of you guys could give me some "do" and "do not" tips.

Thanks in Advance
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Old 12-07-2012, 04:42 PM
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Re: I A C Cleaning

Just for the good order, its a stepper motor and not a sensor.
The PCM controls the position of this motor. You can easily remove the connector of the motor and then 2 Torqx screws and its loose. Whatever you do, never try to turn the plunjer head by hand. There are two tiny stops who prevent the plunjer from turning, so if you would turn it by hand, you will rip off the two stops. (and beleave me, it doesn't need much force to do so, how do i know that)
Just gently wipe the plunjer with a rag (with cleaning solvent if you like).
Then also clean the air passage into the throttle body. You most probably will find lots of dirt in there, which will not help in getting a stable idle rpm. Most probably its the best to remove the whole throttle body, so that you can clean the main air passage as well.
There was a thread before with some pictures of how it all looks like on the 4.7. Lopey idle on an 02' Overland / 4.7HO
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Old 12-07-2012, 06:55 PM
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Re: I A C Cleaning

Thanks Frango, the link was very informative .I may take your advice in cleaning the entire throttle body. Is there any gaskets that may tear, when i take it off? Anything I need to "not do"?

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Old 12-07-2012, 08:58 PM
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Re: I A C Cleaning

No gaskets needed. You have to remove the resonator box, 2 bolts on the fwd corners and a clamp on the throttle body. Then the throttle body is fixed with 3 bolts i believe. Disconnect the connectors from the TPS and IAC and remove the accelerator and cruise cables.
You could eventually use carburator cleaner and spray it in the inlet and IAC bypass with the engine running. No idea how well this will clean it though.
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Old 12-08-2012, 06:32 AM
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Or go further and remove 3 bolts that hold t.b to manifold disconnect sensor plugs and remove it. DisAssemble clean install new gasket between t.b and manifold, i have had 0luck cleaning iacv so i just purchased new from mopar.

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Old 12-08-2012, 11:08 AM
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Re: I A C Cleaning

Quote:
Originally Posted by hoffmanestates View Post
Or go further and remove 3 bolts that hold t.b to manifold disconnect sensor plugs and remove it. DisAssemble clean install new gasket between t.b and manifold, i have had 0luck cleaning iacv so i just purchased new from mopar.

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I would rather go that route, but mopar is so high on their parts. I'm not having no rough idle issues yet. Just trying to do a little preventive maintance. I've had the ole' jeep about 4 months and so far I am real impressed with the vechile. I do believe the previous owner(s) were as proud of it as I am.
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Old 12-29-2012, 08:57 PM
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Re: I A C Cleaning

Just a quick update. I was able to clean everything with no issues. There was quite alot of build up. Thanks for all your help!!
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