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Old 02-03-2013, 06:51 PM   #1
scairkro
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2005 wrx sti
blue

Default idle problems

when my car idles, it drops constantly as low as 500 and below. drives like a champ until i put it in neutral and idle. it sometimes dies at stop lights. anyone have any idea

05 sti
greddy turbo
turboxs fmic
ecutek injectors
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Old 02-03-2013, 07:41 PM   #2
jaxscuby
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did you do anything to your car lately?
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Old 02-03-2013, 09:33 PM   #3
white guys wrx
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Hey there again! I understand your new to the forum so I'm guessing you bought your sti with these modifications on it?

It SOUNDS to me like you have a boost leak or a bad intercooler coupler (or one that needs to be tightened

Check all of your couplers and make sure that they are tight

Also, remember to check the boost lines around the turbo for breaks/tears

- There could be quite a few other things that could cause rough idle, Let us know what progress you make with checking for leaks
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Old 02-03-2013, 09:38 PM   #4
scairkro
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thanks, i will check tomorrow after work
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Old 02-03-2013, 09:38 PM   #5
BoxKicker128
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Same here. i just adjusted it with the Cobb. No boost leak but im running really rich. My mpg are down to 19 and going lower when im just sitting there or i turn the car on to warm up. I just need a tune.
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Old 02-03-2013, 11:09 PM   #6
scairkro
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Ooo....forgot to mention I cleaned my maf to make sure that wasnt the problem
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Old 02-04-2013, 12:47 PM   #7
white guys wrx
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Quote:
Originally Posted by scairkro View Post
Ooo....forgot to mention I cleaned my maf to make sure that wasnt the problem

The MAF's are VERY TOUCHY on these cars. If you do not put it back to the correct location this will cause your car to not start. I've had this issue before also. Try to make sure everything is tight and in the correct location were it was before you cleaned it.

- If you cleaned it with anything other then MAF sensor cleaner... I would recommend picking up a bottle. At the worse case senero you will need to buy a new MAF on the forum if you used anything with alcohol in it or gas.

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Old 02-04-2013, 02:23 PM   #8
scairkro
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I used maf cleaner.....when I was looking up my problem I seen it could be a dirty maf....cleaned it and had no change...im checking all of couplings and hoses later....
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Old 02-04-2013, 03:17 PM   #9
white guys wrx
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Quote:
Originally Posted by scairkro View Post
I used maf cleaner.....when I was looking up my problem I seen it could be a dirty maf....cleaned it and had no change...im checking all of couplings and hoses later....

Alright, Good deal. Those MAF sensors can be a real pita.

keep me posted. I'll check back later
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Old 02-04-2013, 06:08 PM   #10
scairkro
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Checked all my hoses.....all seems well....everything is tight.....still stumped
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Old 02-04-2013, 10:14 PM   #11
white guys wrx
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Is there anyway you can post a video of what its doing? or explain exactly what and when the issue is starting?
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Old 02-04-2013, 10:44 PM   #12
SubyRS03
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Try your idle air control valve. There's plenty of threads on it. You'll need a new gasket $6 at advanced auto. But like everyone else check for leaks. Especially pre turbo there's so many hoses to check. Also check your PCV. If you take it off be careful it should move freely pick some carb cleaner or maf cleaner I can't remember double check. Just spray in all the holes and shake it to get the crap out. I only suggest all this cause I'm dealing with this problem as well
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Old 02-05-2013, 05:51 AM   #13
scairkro
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Ive read that too....I have seen plenty of pics, but I still cant find the iacv. They may also be cuz im limited on my knowledge of engines. Is there anyway you could post pics or vid of where its at? The ones ive seen havent been much help.
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Old 02-05-2013, 05:51 AM   #14
scairkro
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Ill try and get a vid of it idling today
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Old 02-05-2013, 11:43 AM   #15
SubyRS03
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Quote:
Originally Posted by scairkro View Post
Ill try and get a vid of it idling today
Give me an email and ill email or txt em to you instead of going through all the image link ish lol just shoot me a pm with a email/number
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Old 02-05-2013, 04:00 PM   #16
white guys wrx
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Quote:
Originally Posted by SubyRS03 View Post
Give me an email and ill email or txt em to you instead of going through all the image link ish lol just shoot me a pm with a email/number

info@vanillav2.com send it over or you can upload it to youtube/imageshack and post a link
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Old 02-05-2013, 05:59 PM   #17
ogintheback
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Hose clamps of course!

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Check throttle body gasket too.
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Old 02-05-2013, 06:01 PM   #18
scairkro
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https://www.youtube.com/watch?v=xMby...e_gdata_player

This is what it is doin at idle and after I let off the gas to put in neutral and coast....it drops really hard especially after it was just in a higher rpm range such as navigating a parking lot in 1st or 2nd....im sorry about the music
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Old 02-05-2013, 08:35 PM   #19
jenzos
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video says its private
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Old 02-06-2013, 08:15 PM   #20
83roothm
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Quote:
Originally Posted by scairkro View Post
Ive read that too....I have seen plenty of pics, but I still cant find the iacv. They may also be cuz im limited on my knowledge of engines. Is there anyway you could post pics or vid of where its at? The ones ive seen havent been much help.
IACV is right on top of the intake manifold before the intercooler
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Old 02-06-2013, 08:17 PM   #21
83roothm
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Just cleaned and replaced my IACV gasket moments ago... Having the same problem. Still low idle. Hoping it just needs to break in. Stay in touch if you fix or diagnose any problems
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Old 02-06-2013, 09:44 PM   #22
scairkro
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Im gonna replace the spark plugs and a few other little things and see what happens
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Old 02-21-2013, 03:56 PM   #23
scairkro
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So just changed plugs and no change.....any ideas?
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Old 02-22-2013, 10:55 AM   #24
Turbo Time
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Could it just need a good tune? When was the last time it was tuned and was it someone reputable? Also, have you recently added an atmospheric BOV? Last question is, have you disconnected the battery recently?
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Old 02-22-2013, 11:27 AM   #25
scairkro
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Quote:
Originally Posted by Turbo Time View Post
Could it just need a good tune? When was the last time it was tuned and was it someone reputable? Also, have you recently added an atmospheric BOV? Last question is, have you disconnected the battery recently?
Not sure f it was tuned...bought it as is 3 weeks ago....its got a bypass valve and I just disconnected the battery to change my pkugs.. u guys are in cary, nc right?
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