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08-30-2008, 06:22 PM | #176 |
Scooby Newbie
Member#: 128263
Join Date: Oct 2006
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just out of curiosity - the guys that were/are having rough idles, so you notice the voltmeter gauge doing anything funny?
reason i ask, is this sounds exactly like the same issue I am having, only difference is when the car starts to idle rough, my voltmeter starts dipping to about 12v. other than that, sounds like a lot of the issues are the same.
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09-04-2008, 11:08 PM | #177 |
Scooby Newbie
Member#: 188617
Join Date: Sep 2008
Chapter/Region:
PRSIC
Location: San Juan, Puerto Rico
Vehicle:2008 WRX Sedan OBP |
2.5 Rs?
I have a 2002 2.5 RS sedan, does your advice apply to this model or only the turbo models?
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09-04-2008, 11:59 PM | #178 |
Scooby Specialist
Member#: 166898
Join Date: Dec 2007
Chapter/Region:
W. Canada
Location: Canada
Vehicle:1994 T leg SS ABM |
i dont have an IAC.....
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09-15-2008, 12:19 PM | #179 | |||||
Scooby Specialist
Member#: 184753
Join Date: Jul 2008
Chapter/Region:
Tri-State
Location: Poconos. PA
Vehicle:2005 WRX PSM |
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well ill b dammed, i thought i was the only guy out there with this problem. it usually only happens when the car has idling for a while in warm/humid weather, or the worst - in traffic. it'll start at 1.5k then eventually raise to nearly 2.5k . ITS DONE THAT EACH TIME i took it to the track!! i deff wanna get that done before i ever take it back to the track. one of these days when i have the free time i will try the throttle cable method or look into getting one of those gaskets for the IACV. |
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09-15-2008, 04:28 PM | #180 |
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Member#: 91700
Join Date: Jul 2005
Chapter/Region:
Tri-State
Location: NY
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GDAryder, try adjusting the cable 1st. I still havent seen this issue come back yet, but i do have the gasket just in case . I seriously don't think I will have this issue anymore.
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09-15-2008, 07:39 PM | #181 |
Scooby Specialist
Member#: 170512
Join Date: Jan 2008
Chapter/Region:
MAIC
Location: Subaru Stars...Williamsburg/VA
Vehicle:2012 WRX Ice Silver |
+1 Adjusting cable FTW. Most of cars with this issue I know about needed only cable adjustments
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09-15-2008, 11:14 PM | #182 |
Scooby Guru
Member#: 96944
Join Date: Sep 2005
Chapter/Region:
MWSOC
Location: Hampshire, IL
Vehicle:2005 SAAB 9-2X AERO 4eat Stage 2 Protuned |
Complete noob here, I am experiencing high idle during big traffic and even popping open the hood after the ride you can feel slack in the throttle cable, but no slack at all in the cruise control. Question is this, which nut do I loosen to add some slack to the cruise control cable? Thanks guys! Edit: And the cruise control cable is on the left side of the two when facing the car with the hood open correct? Just checking. Last edited by eurospek; 09-15-2008 at 11:25 PM. |
09-16-2008, 03:57 AM | #183 | |
Scooby Specialist
Member#: 184753
Join Date: Jul 2008
Chapter/Region:
Tri-State
Location: Poconos. PA
Vehicle:2005 WRX PSM |
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09-16-2008, 03:57 AM | #184 | |
Scooby Specialist
Member#: 184753
Join Date: Jul 2008
Chapter/Region:
Tri-State
Location: Poconos. PA
Vehicle:2005 WRX PSM |
Quote:
i will deff give that a try. it doesnt happen all the time but when it does it sucks a$$. i hate having a high idle |
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09-16-2008, 11:01 AM | #185 | |
Scooby Specialist
Member#: 33868
Join Date: Mar 2003
Location: Chesterfield, MO
Vehicle:2003 wrx srp |
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You can verify that is the problem by pushing on the pulley (to the left in the picture) to close the throttle when you have high idle. I think it is a 10 mm wrench. Loosen the nut closest to the front of the car and play with it to get a little slack and then snug them both up. Takes about 5 minutes. I am not sure where the recall for the cruise control cable clip goes because I ignored that notice. |
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09-24-2008, 11:06 PM | #186 |
Scooby Specialist
Member#: 611
Join Date: Dec 1999
Chapter/Region:
Tri-State
Location: Saratoga Springs NY
Vehicle:14 E63s AMG 09 ML63 AMG |
Well I just cleaned my IAC tonight. My symptom wasn't high idle but stalling, stumbling and searching for idle every time I clutched in after a long drive in 5th.
Taking it apart was pretty much as stated. I got the rear screw out with vice grips but the front one was too tight. Luckily I had 2 big flatheads and the craftsman fit right in and broke it loose no problem. I laughed as I watched the gasket grow out of it's recesses right b4 my eyes. It was dirty/oily but not so much that it look clogged or stuck. I cleaned it with carb cleaner and q-tips. I tested it with 12v and after it sparked from a wrong connection I got it to move by touching the right one. So I put it all back together and sure enough now I have a high idle and about 20 seconds in it throws the 1507 cel and starts loping. I reset the ecu and wiggle some wires but it doesn't go away. So I pull it apart again and work the valve with a pick. I test it again and proceed to touch the wrong one again and it sparks. But it still moves when I do it right. I put it all back together and it's idling great with no CEL. After the 10 minute gasket bed in drive I cruise home push in the clutch to make my turn and my car doesn't stall. The idle dropped perfectly back to where it belonged. I think it worked. Thanks to all who posted here! byron |
09-25-2008, 03:27 AM | #187 | |
Scooby Specialist
Member#: 184753
Join Date: Jul 2008
Chapter/Region:
Tri-State
Location: Poconos. PA
Vehicle:2005 WRX PSM |
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09-28-2008, 10:56 AM | #188 |
Scooby Specialist
Member#: 126049
Join Date: Sep 2006
Chapter/Region:
MAIC
Location: Harrisburg, Pa
Vehicle:2002 wrb wrx-sold 06 SGM STi |
What points do you probe with the multimeter to find out if you have a open circuit or closed.
Im having a high idle problem as well,with white smoke from the exhaust and no boost. I have a Cobb ap and it threw the cel for "idle control system malfunction"(fail safe) not sure if i need a new IAC or just need cleaning. Unplugged the IAC connector and the idle went to normal..plugged it back in and jumped back to 1500. Last edited by oburgslim; 09-28-2008 at 03:19 PM. |
09-29-2008, 01:31 PM | #189 |
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Member#: 126049
Join Date: Sep 2006
Chapter/Region:
MAIC
Location: Harrisburg, Pa
Vehicle:2002 wrb wrx-sold 06 SGM STi |
^^Well i got the new gasket and went with the alky and q-tip method..installed everything..reset the ecu,turn to ON postion,then off(repeat 3times)..started the car and let it run for 10mins. CEL popped on with the 1507 code. cleared the cel and started the car again,idle still 1500-2000..went for a drive under boost and car sounds fine except for the high idle when i stop.
So i think im going to have to shell out $300 for a new IAC. the question is now..when i get the new IAC is it going to be the part that i removed to replace the gasket or am i going to have to mess with the TB? Any suggestions for me to DIY. Thank you. |
09-30-2008, 06:47 AM | #190 |
Scooby Specialist
Member#: 126049
Join Date: Sep 2006
Chapter/Region:
MAIC
Location: Harrisburg, Pa
Vehicle:2002 wrb wrx-sold 06 SGM STi |
Bump...anyone has an answer^^^^
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09-30-2008, 02:44 PM | #191 |
Scooby Specialist
Member#: 611
Join Date: Dec 1999
Chapter/Region:
Tri-State
Location: Saratoga Springs NY
Vehicle:14 E63s AMG 09 ML63 AMG |
IDK what part you're gonna get if you order it but you could check out subaruparts.com and see if they show a picture.
I do know that my car did the same thing (popped the code after cleaning). So I took it off and cleaned it again and it had been fine since. Maybe give that a try. |
10-02-2008, 07:29 AM | #192 |
Scooby Specialist
Member#: 126049
Join Date: Sep 2006
Chapter/Region:
MAIC
Location: Harrisburg, Pa
Vehicle:2002 wrb wrx-sold 06 SGM STi |
Well unlike you other guys that cleaned the IAC fixed the problem,i had to replace the sensor itself..which was $320 from subaru..checked suparuparts.com to late which had it for less..
But that fixed the problem for me..now i have a normal idle |
10-05-2008, 12:50 PM | #193 |
Scooby Newbie
Member#: 190875
Join Date: Oct 2008
Location: Northeast CT
Vehicle:1999 Outback Blue |
Awsome Thread about cleaning the IACV! Thanks
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10-08-2008, 10:11 AM | #194 |
Scooby Specialist
Member#: 72234
Join Date: Oct 2004
Chapter/Region:
South East
Location: S. FL... Now Fort Polk, LA
Vehicle:2004 WRX SRR EJ257-35R-6MT |
+1 Bump It!
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10-08-2008, 04:30 PM | #195 |
Scooby Specialist
Member#: 98203
Join Date: Oct 2005
Chapter/Region:
Tri-State
Location: Peekskill, NY 10566
Vehicle:2005 Spaceship/03WRX both WRB |
My friend just bought a 1998 Forester with 204k miles on the body, but engine and tranny were rebuilt less then 1000 miles ago. Hes having this code being thrown, and we were going to clean it out. His isnt high idling, but its actually stalling when the clutch is depressed. The idle will drop down to about 500, and the car dies. This is also happening with my 2005 WRX, so we were planning to clean both of them Tommorow.
Hopefully it works... ill keep u guys posted. |
10-14-2008, 12:36 PM | #196 |
Scooby Newbie
Member#: 28291
Join Date: Oct 2002
Chapter/Region:
RMIC
Vehicle:2015 WRX |
i own a 2002 wrx, ~80k miles, and had cleaned the IACV a few years ago along with replacement of the gasket. Yesterday, the car throws the infamous P1507 code and has the associated hesitation, high/irradic idle, and basically won't drive.
I spent the better part of the day cleaning with anything I had around -- electronics QD cleaner, brake cleaner, another type of electronics cleaner, and acetone -- after probably 2-3 hours and coupious amounts of q-tips, it was better, but by no means fixed. So I slept on it, and decided to take the solenoid / field coil off of the housing. After rebuilding it, the internal cylindrical piston should move effortlessly. It should be able to move by merely blowing on the fin (with the feild coil disconnected). If it is not, you haven't cleaned it well enough ANyway, saved me $350... maybe I should start rebuilding these more often. On another note, it is truely amazing how much this effects throttle response and surging that is so common with these WRX's. Keeping this part clean is essential to maintaining good part-throttle response. It really makes the car feel like new again. Also, the valve is driven by a magnetic field (hence the term field coil above). Therefore, it is impossible to burn out the stepper motor on the IACV. That is the brilliance behind the design. Of course, on the other hand, its also easier to get gunked up, but at least this design makes it rebuildable. Last edited by Dobbs; 10-14-2008 at 12:55 PM. |
10-14-2008, 02:53 PM | #197 |
Scooby Newbie
Member#: 191651
Join Date: Oct 2008
Chapter/Region:
SCIC
Location: Fresno, CA
Vehicle:2004 STi Blue |
Does the 04 STi have an IACV?
I have looked through this thread and my 04 STi is exhibiting similar symptoms. But when i popped the hood, i didn't see anything similar to the IAC....Is it in a different spot on the STi? Does it even have one?!
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10-18-2008, 12:42 PM | #198 |
Scooby Newbie
Member#: 191911
Join Date: Oct 2008
Chapter/Region:
Tri-State
Location: north o philly south of heaven
Vehicle:2001 lownslow ranger black |
iacv
so today i cleaned the iacv and replaced the gasket, no dice. i cleared the cel and primed the fuel pump and let the car idle for like 10 minutes, it was cold so the rpm's were high anyway, they dropped but only to like 1250. i guess i have to replace the iacv.
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10-18-2008, 01:32 PM | #199 |
Scooby Specialist
Member#: 170512
Join Date: Jan 2008
Chapter/Region:
MAIC
Location: Subaru Stars...Williamsburg/VA
Vehicle:2012 WRX Ice Silver |
I just cleaned IACV, had gasket, but reused old one... was good, guess because I replaced last time like 7k miles ago...
Lately RPM was dropping down to around 1000 RPM, and than much slover to 500. It is little better now, but still not linear drop to Idle RPM(500) |
10-19-2008, 02:47 AM | #200 |
Scooby Newbie
Member#: 172402
Join Date: Feb 2008
Chapter/Region:
RMIC
Location: slc, utah
Vehicle:2007 impreza 2.5i urban grey |
Can somebody help me finding the throtle cables on a 07 2.5i 4eat?
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