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Old 08-23-2010, 08:10 AM   #326
Boostmaster
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Has anyone found a cheaper resource for the replacement IAC? I've checked everywhere and the best deal Ii can find is about $280 for the part.

I just developed this P0519 code last night and ran some seafoam through the intake... Seemed to work for a few minutes but the CEL came back on. I'm going to pull it off tonight and clean it to see if that is a good fix... However, based on my luck and my experience with IAC's on other cars, it always seems as if I end up replacing them anyway so I wanted to see if I could find the IAC just a little bit cheaper...

If anyone has a good resource please post up.
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Old 08-23-2010, 11:28 AM   #327
K.Linchpin
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Quote:
Originally Posted by Uncanny View Post
I just wanted to bump this, SOA has no specs to clean this (they just replace it) but cleaning it CAN help in most cases.

Soaking in gasoline seemed to be the best method for me (I tried alcohol first). Also, you cant really clean the valve that well without first removing the plastic-bodied stepper motor.
I'm having the same issues as a lot of people on here have had. I tried cleaning my solenoid using the OP's suggestions to no avail. Unfortunatly, I only bought one $10 gasket. I'm afraid of removing the valve a second time because I'm not sure if the gasket has already expanded or not. I cleaned it the first time on sat, have driven my car several times since then. 2 days later, what do you think? Should I risk removing it again without first buying another $10 gasket? I'd like to take it apart tonight. Otherwise, if I have to order a gasket, the soonest I'll be able to do so will be on wednesday. Thanks for the insight!
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Old 08-24-2010, 12:25 AM   #328
K.Linchpin
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So this is what happens if you stand on your IACV when it's on your engine:





The screws bend, the magnet gets jacked up, and the valve shaft bends too.

No I didn't stand on my engine. But I think someone did...

to answer my own question, it's safe to take the valve assembly off after only a couple days after installing a new gasket. Mine did not expand yet.
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Old 08-25-2010, 04:12 PM   #329
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Just a quick note, I removed my IAC and soaked it in Gas after I had already run some seafoam. It was dirty but not so terrible. Then I discovered that the little round gasket between the metal and the plastic is buckled out....(I'll post some pics when I get home)

So I figured I'd dismantle it like the pic above but the bolts are 5 pointed stars, not torx I cannot seem to find anything in my arsenal to remove them or where to even buy the tool... Anyone have any idea? I need to get this fixed asap as while the Wrx is down I have to drive my Expedition... Best I can get is 18mpg... And I commute 200 miles a day
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Old 08-25-2010, 08:01 PM   #330
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The screw heads are so ridiculously soft, I just took a hammer and pounded a 1/4" flat head screwdriver into the screw head. I replaced the screws with allen head metric screws upon reinstallation.
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Old 08-26-2010, 12:59 AM   #331
K.Linchpin
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^^^^ That's what I was going to do. But to remove mine, I took a small file and made my own slot for a flathead screw driver. It's not like I have a warranty or anything
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Old 08-26-2010, 08:36 AM   #332
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That's a good idea. I'll have to try that...

I do not know if the cleaning and gasket repair/replacements will correct my issue so I've been hunting for a deal on the actual valve itself.

The loacl dealer wanted $350.00 and that did not include the gasket! The gasket is $6.71.

I checked with Rock Auto and they have two brands... $389 and $288. I have them checking to see if they come with gaskets or not...

I have looked everywhere I can think of and cannot find a better price. I'm sure I cna get the 10% discount coupon for Rock Auto but I'm wondering if anyone has been able to find a cheaper resource... I just can't see paying over $200 bux for an IAC... All of my other cars are maybe $50 bux max!!!

Anyone???
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Old 08-27-2010, 05:06 PM   #333
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Well, I used my cutting wheel and nicked the star bolts and got them off easily--^^Thanks for the idea.

Turned out that the little round gasket had expanded and simply pushed itself out. Anyway, I simply swapped in new o-ring gasket and re-installed. Ran the car and the A/C and it did as it was supposed to. Yipee! I'll assume it's fixed until I find out othewise.

This thread saved me $300! More than switching to Geico!
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Old 08-30-2010, 10:55 AM   #334
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Quote:
Originally Posted by Boostmaster View Post
That's a good idea. I'll have to try that...

I do not know if the cleaning and gasket repair/replacements will correct my issue so I've been hunting for a deal on the actual valve itself.

The loacl dealer wanted $350.00 and that did not include the gasket! The gasket is $6.71.

I checked with Rock Auto and they have two brands... $389 and $288. I have them checking to see if they come with gaskets or not...

I have looked everywhere I can think of and cannot find a better price. I'm sure I cna get the 10% discount coupon for Rock Auto but I'm wondering if anyone has been able to find a cheaper resource... I just can't see paying over $200 bux for an IAC... All of my other cars are maybe $50 bux max!!!

Anyone???
Call up Jeremy @ Fred Beans. 888 842-8829
The valve cost me around $225 before tax for King of Parts pricing

This fixed my high idle and low rpm hesitation. Additionally, AVCS was disabled for some reason or another and replacing it fixed this as well.
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Old 09-12-2010, 12:43 AM   #335
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cheers to a guy on another subaru forum in australia who helped me to this link.

i fixed the idle problem on my 04 GDB STI.. im in Auckland NZ along way away from my respected tuner in Adelaide Aust..

im not too handy on the tools either but managed to fix this problem..

cheers nasioc..

Q
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Old 09-17-2010, 08:56 AM   #336
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Thank You ,Thank You,Thank You.

My IACV has failed resulting in the idle being stuck at 3,300rpm.

Thought the ECU was at fault but it would suggest the IACV is faulty. So need to remove mine.

Sadly they are not cheap. Looking at 280.00 GBP plus VAT at 17.5%.

Great write up.

Steve
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Old 09-17-2010, 11:48 AM   #337
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Quote:
Originally Posted by The Gimp View Post
My IACV has failed resulting in the idle being stuck at 3,300rpm.
I'd also check to be sure the cruise control cable isn't hung up and not allowiing the throttle to close
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Old 09-17-2010, 01:45 PM   #338
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Quote:
Originally Posted by rick-l View Post
I'd also check to be sure the cruise control cable isn't hung up and not allowiing the throttle to close
Hey Rick L, Not a problem there matey. No cruise control on my car only the right foot.

Steve
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Old 09-17-2010, 01:47 PM   #339
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So ive completed this process on dozens of subarus, mine included. Ive done my own, counting this week, 3 times. This time, unfortunately, the idle will not return to normal. I am really trying hard here to diagnose as something else. Ive never thrown a code for the symptoms, but knowing cars I performed a cleaning procedure to the best of my ability using qtips, manifold cleaning solvent and some air pressure from the compressor. This time around it cleaned up the running a bit but the idle remains high. Before i contact my parts guy, any other suggestions? I feel like everyone I work with here on post knows nothing about cars. Nobody understood why I cleaned my iacv. Shoot, they dont even know what it does. (army guys) Again, anything else I can give a shot here before kicking out a couple hundo?
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Old 09-18-2010, 12:18 AM   #340
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Old 09-18-2010, 08:44 PM   #341
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Quote:
Originally Posted by K.Linchpin View Post
Interesting. Ill try gasoline then. TY
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Old 09-18-2010, 10:09 PM   #342
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Quote:
Originally Posted by srREXed View Post
So ive completed this process on dozens of subarus, mine included. Ive done my own, counting this week, 3 times. This time, unfortunately, the idle will not return to normal. I am really trying hard here to diagnose as something else. Ive never thrown a code for the symptoms, but knowing cars I performed a cleaning procedure to the best of my ability using qtips, manifold cleaning solvent and some air pressure from the compressor. This time around it cleaned up the running a bit but the idle remains high. Before i contact my parts guy, any other suggestions? I feel like everyone I work with here on post knows nothing about cars. Nobody understood why I cleaned my iacv. Shoot, they dont even know what it does. (army guys) Again, anything else I can give a shot here before kicking out a couple hundo?
i used CRC carby cleaner..worked a treat for me.
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Old 10-02-2010, 12:08 AM   #343
OrbitalEllipses
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FWIW, I performed this procedure in March of this year as a preventative step. I used alcohol and didn't take off the black sensor/motor. Today out of nowhere when I fired up the car I got the wandering idle with the associated P1507 code.

This time I took off the black piece by filing a slot into the 5-point screws so that a traditional flathead screwdriver could be used. This is ESSENTIAL in my opinion as it allows you to spin the shaft while cleaning; at first it took substantial effort to spin this shaft. I soaked the chamber in Seafoam to do an intital cleaning. After wiping up the sides with a q-tip I again refilled the chamber, this time spinning the shaft. Must have a been a huge carbon deposit because it broke free and the shaft spun with no effort.

Basically...take the damn sensor off so you can clean the IACV well!

Thanks to the person who suggested filing a slot into the screws.
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Old 10-13-2010, 10:51 PM   #344
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I hate my dealership with a passion! They mark up everything. They wanted $22 for the gasket today.
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Old 10-14-2010, 10:25 AM   #345
anickode
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I love how many things on a car that normally get replaced can be restored to working condition by simply disassembling and cleaning them.
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Old 10-16-2010, 03:47 PM   #346
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I picked up the gasket today and I'm excited to do this cleaning. I don't really have any major idle issues except for sometimes when the car is hot, when I turn the car on it will almost stall (but doesn't).

Also, sometimes when I'm idle it will dip a tiny bit.

My question is, is there anyone on long island or near amherst massachusetts (I'm going back to school there on monday) that can assist me in this cleaning? Uncanny says that ideally, the whole thing should be removed and cleaned. I'm confident I can just clean the valve by just removing the top but I'm a bit wary of removing the actual body to clean it seperate from the car.

I know it's a lot to ask but worth a shot!
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Old 11-23-2010, 12:06 PM   #347
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is there any loose parts that may fall out if i remove the stepper motor? Also after all is cleaned, should any lubricants be used? ie wd40?
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Old 11-23-2010, 01:38 PM   #348
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subscribed..
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Old 11-23-2010, 02:25 PM   #349
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Quote:
Originally Posted by El Guapo View Post
is there any loose parts that may fall out if i remove the stepper motor? Also after all is cleaned, should any lubricants be used? ie wd40?
Are you talking about taking apart the IACV? I don't think that is recomended.
http://forums.nasioc.com/forums/show....php?t=1704762
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Old 11-24-2010, 11:05 AM   #350
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El Guapo, if you can get the iacv to spin freely, I don't see a reason for taking it apart.
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