slmgringo Posted June 18, 2008 Share Posted June 18, 2008 Sup everyone. So I've had my car for about 2months now and the check engine light came on. The code that came back was p1507, in reference to the IAC valve. I havent noticed any difference while driving, or accelerating, etc, but i dont want it to get worse. the part itself is 399.99 :-\. Any other possibilities that could be causing this code to come up?? thanks in advance, brandon. 2002 Subaru Legacy GT Lmt 30,899 miles. Link to comment Share on other sites More sharing options...
Bdubs Posted June 18, 2008 Share Posted June 18, 2008 It may just be dirty. Many people have had this problem, and found the actual culprit to be a $20 Neutral Switch. Check this thread, maybe some useful info here for you. http://forums.nasioc.com/forums/showthread.php?t=1196685&highlight=IAC+valve Link to comment Share on other sites More sharing options...
SBT Posted June 18, 2008 Share Posted June 18, 2008 If you're a member on NASIOC do a search on my SN and Idle Air Control. I've put a ton up over there on this item. It can be cleaned, just follow the progression. Here's the link to the search I used. http://forums.nasioc.com/forums/search.php?searchid=678976 More specifically: http://forums.nasioc.com/forums/showpost.php?p=4068617&postcount=10 SBT - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
slmgringo Posted June 18, 2008 Author Share Posted June 18, 2008 thanks for the fast replies. I took my car by the dealer, and he suggested they do a fuelsystem cleaning, which he said was 150$ :-\. He also said I was due for the 30k service which is 850$ which seemed like alot of money for the things listed, however im not a mechanic by any stretch. I was just wondering if all the things on thier list are all necessary and which things if any i could do at home. Heres the list: oil change and filter (done) check transmission transmission service flush cooling system replace fuel filter (if applicable) replace air filter replace pcv valve (if applicable) inspect plug wires brake fluid flush rotate n balance tires inspect front n rear breaks inspect belts n hoses check electrical clean throttle bore lube throttle linkages fuel system flush inspect steering n suspension lube all grease fittings (if applicable_ multi point safety inspection fluid levels courtesy wash replace spark plugs( if applicable) thanks again, Brandon Link to comment Share on other sites More sharing options...
SBT Posted June 18, 2008 Share Posted June 18, 2008 Heres the list: I've bolded and "blued out" the things I always do at the 30K SI. Necessary - especially if you can't do these yourself: oil change and filter transmission service (do NOT let them flush it, just drain and refill - be specific on this one)flush cooling system (do NOT let them flush it, just drain and refill - be specific on this one too)replace fuel filter (if applicable)replace air filterreplace pcv valve (if applicable and warranted)brake fluid flushinspect steering n suspensionreplace spark plugs( if applicable) Total for this would be about $400 and should take about 4 hours tops. Unnecessary unless you have evidence the car is running rough inspect plug wires (rough engine only or CEL)rotate n balance tires (no dealer should be allowed to do this)clean throttle bore (rough engine only or CEL)check transmission (If you don't the tranny fluid changes - not necessary)Not necessary ever IMHO fuel system flushThese items should be part of the complimentary 27-point inspection you get when you have your oil/filter serviced. It's clear they're tring to upsell you on these. Any tech worth their salt would do this any way. inspect front n rear brakesinspect belts n hosescheck electricallube throttle linkageslube all grease fittingsmulti point safety inspectionfluid levelsAnd this should be "complimentary" for having invested your month's savings in this dealership. courtesy washBTW - That $150 Fuel Service - forget it unless you're really running rough and you don't have a vacuum leak someplace. Then it MIGHT be of some value. It's just two cans of SeaFoam (packaged as a Subaru fluid) that they pump into your intake. Total cost to them T&M, $35.00 ($25 labor and $10 materials) - it's a big ripoff. HTH SBT - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
bluesuby Posted June 18, 2008 Share Posted June 18, 2008 Does the 2.5 turbo on our GTs have a PCV? Where is it? Link to comment Share on other sites More sharing options...
SBT Posted June 18, 2008 Share Posted June 18, 2008 Does the 2.5 turbo on our GTs have a PCV? Where is it? Yeppers. Attached to this hose assembly. I've attached a schematic as well so you can see where it's located in the piping mix. SBT16 - PCV Hose Assembly.pdf - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
bluesuby Posted June 22, 2008 Share Posted June 22, 2008 Remove the intake manifold? Subaru didn't make this easy... Link to comment Share on other sites More sharing options...
underpowerd Posted June 22, 2008 Share Posted June 22, 2008 ^nah, it's just a pita clamp you wouldn't otherwise be able to reach with their 'specialty tool'; it often has to come off if you do an inlet. it's a little bastard, but you can get it off with other tools after just removing the tmic. now getting it back on...well, let's just say i have a different clamp on there now that works just fine. Link to comment Share on other sites More sharing options...
SBT Posted June 22, 2008 Share Posted June 22, 2008 ^nah, it's just a pita clamp you wouldn't otherwise be able to reach with their 'specialty tool'; it often has to come off if you do an inlet. it's a little bastard, but you can get it off with other tools after just removing the tmic. now getting it back on...well, let's just say i have a different clamp on there now that works just fine. We're talking about 3rd Gen NA Legacy as I recall. No TMIC involved. SBT - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
underpowerd Posted June 22, 2008 Share Posted June 22, 2008 re: posts 6, 7, 8. Link to comment Share on other sites More sharing options...
SBT Posted June 23, 2008 Share Posted June 23, 2008 re: posts 6, 7, 8. Got it! Thought you were referring to the OP. SBT - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
subie_dude05 Posted February 16, 2012 Share Posted February 16, 2012 I was having a studder issue at idle and got the code P0506 and solved that issue by replacing the PCV and cleaning out the IAC. In the N/A, 05' at least, it is on the right and not left. i may have loosened to much thought, as it looks like i fowled a plug #2. lol. Link to comment Share on other sites More sharing options...
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