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  #1  
Old 07-03-2008
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IAC experience.

Hello,

I just thought I would let you all know that I changed out my IAC valve the other day because of my recent idling issues and "marbling" sounds comming from engine. Also had a tough time with my truck boggin to around 500RPMS when idle and then giving it gas to get the RPM's back up.

Once I swapped out this unit (refused to clean it because that never works) everything was back to normal. Truck runs and sounds great. No more issues.

If anyone out there is having idling issues or the "marbling" issue I would get this swapped out asap. It runs about $50 @ AutoZone.

Rob
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Old 07-03-2008
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Theres another recent thread in the 3.0 forum where the guy had this problem.



Maybe if ya'll did choose the 3.Slow u wouldnt have this problem
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Old 07-03-2008
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If you want to solve that problem one and for all then install an oil catch can. I have been planning on doing it but I have been lazy and I haven't found a catch can that I like.
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Old 07-03-2008
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all the engines with a IAC do it...not just the 3.0, this goes back to the early 2.9 days even
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Old 07-03-2008
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Quote:
Originally Posted by mazzman View Post
Theres another recent thread in the 3.0 forum where the guy had this problem.



Maybe if ya'll did choose the 3.Slow u wouldnt have this problem
Was looking for a 4.0 at first to be honest, I like the power they have.

But at the time all I could afford is my 3.0, so I'll just polish my terd :)

And 4.0's have an IAC too, I would suggest checking/replacing it :)
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Old 07-03-2008
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Originally Posted by fddriver02 View Post
If you want to solve that problem one and for all then install an oil catch can. I have been planning on doing it but I have been lazy and I haven't found a catch can that I like.
Please elaborate on this :)
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Old 07-03-2008
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The catch can goes in between the intake and the crankcase outlet. The can separates the oil vapor from the crankcase gases. The gases continue on to the intake to be burned and the oil stays in the can until you drain it. My friend has a 06 GTO with one and after about a year the throttle body still looks new and ls motors are known for their blow by.
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Old 07-03-2008
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Quote:
Originally Posted by Prerunner-Ranger View Post
Was looking for a 4.0 at first to be honest, I like the power they have.

But at the time all I could afford is my 3.0, so I'll just polish my terd :)

And 4.0's have an IAC too, I would suggest checking/replacing it :)
ha ha i know, im just giving u chit
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Old 07-03-2008
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Something like this but it has to be oil safe so it doesn't eat up the material.

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Old 07-03-2008
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Here is the GTO one:



I like it because it's billet and you can get it in black.
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Old 07-03-2008
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How hard is the installation?
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Old 07-03-2008
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The hardest part is mounting it. Then you just run a hose from the stock crankcase outlet(the hose going to your intake) to the can then from the can to the stock inlet on the intake tube.

If you plan on doing this stay away from the ebay cans. They are known to cause more harm that good because the ports on them are very restrictive.

P.S.- Remember to drain it. LOL
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Old 07-03-2008
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Hmmm....

I'll look into it, thanks for the info.
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Old 07-03-2008
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No prob.
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Old 07-04-2008
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Us S/C Lightning guys use these too. There are plenty versions out there. You can even make your own if you want.

What I do is take my PCV and IAC off every 15k to 20K miles and clean them thoughly with throttle body cleaner. This way the PCV system works like ford intented it too.. and I don't have to ever replace those parts because of crud buildup.


Rich
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  #16  
Old 07-04-2008
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PCV stands for?
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  #17  
Old 07-04-2008
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Positive Crankcase Ventilation
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  #18  
Old 07-04-2008
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Dirt & oil from K&N filters will also gum up IAC valves, throttle bodies, and MAF sensors. The MAF sensors are "upstream" from the crankcase port in the intake. The solution to this is to use the OEM paper air filters.
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  #19  
Old 07-04-2008
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Quote:
Originally Posted by fddriver02 View Post
Only if your an idiot. Sounds like you over oiled a few yourself so that would make you an????

Nope, I know better than to put a K&N on one of my vehicles......Known fact that the oil comes off the filter media, and even K&N knows how much dirt their filters pass........
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  #20  
Old 07-04-2008
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I have never had a problem with K&N and I have used them on 4 different vehicles. If I can run one on a 1993 twin turbo RX7 running 14lbs of boost and not have oil anywhere in sight on any of the intake pipes, charge pipes or intake manifold then it will be fine on a NA engine. What's next? Are you going to tell everyone that the Fitch fuel catalyst works?
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  #21  
Old 07-04-2008
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I find it slightly odd that Takeda's posts dissing on K&N filters are allowed to remain although it's irrelevant, and he litters threads with it, but every one else asking him not to litter the thread or defending K&Ns gets deleted. Hmmmmm.
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  #22  
Old 07-04-2008
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No. The posts that were deleted were the ones consisting of arguing and making stupid insults back and fourth. It so happens the first non insulting/bickering/waste-of-space post was Takeda's first one. Its a coincidence. If you would like to refute what he has to say, please do so without driving a very useful thread into the ground.
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  #23  
Old 07-05-2008
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Laying down the law!

Okay so back to the thread @ hand.
GET YOUR IAC REPLACED!!!
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  #24  
Old 07-05-2008
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yall are lucky (well I guess I am too since I have a 3.0 in my ranger), I am working on a 94 mazda mx6...the IAC are like $400 from the parts stores...seriously. Pulled one from a junkyard this morning...will see if I can make that work.
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  #25  
Old 07-05-2008
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My IAC valve went while I was driving, it would not idle below 1500 rpm and taking it off and oiling/cleaning it did not help.
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