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Old 05-24-2005, 12:17 AM   #1
WRXskeet
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Join Date: Aug 2004
Location: norco, CA
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2005 Aspen STi,rip02
Bugeye mafia 02 :(

Default help me with my Start-up and low idle

hey guys, i made a little video clip so i dont haveto explain whats goin on,


right click save as:

http://www.we-todd-did-racing.com/we...ZmQzMXk1NDE%3D

02 wrx, mods cat-less TBE, i used to have a AEM CAI and i thought that was the problem, and today i re-installed the stock intake and Reset the ECu and i still have the problem,

what do you guys think?

thanks alot
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Old 05-24-2005, 01:26 AM   #2
WRXskeet
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Bugeye mafia 02 :(

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bump.......
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Old 05-24-2005, 01:52 AM   #3
WRexxer
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mine does the same!?
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Old 05-24-2005, 02:05 AM   #4
vinceGC8
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mine looks the same. seems normal to me, unless my car is abnormal.
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Old 05-24-2005, 06:52 AM   #5
GDR
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Looks like its at 750rpm which is what mine does stock.
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Old 05-24-2005, 07:10 AM   #6
scooterforever
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That looks OK. Let me see if I do the same initial dip down to 550 or so, but... once idling that looks normal. And I've had idle problems before (start it up, tach runs to zero, engine dies, etc.)
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Old 05-24-2005, 11:38 AM   #7
GDR
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Hey mine does the dip too. I never really noticed it before.
Car was sitting 1/2 hour after being fully warm.
Goes to 1k then dips to 500 or so then stablizes at 750.
Sometimes when its cold(SoCal cold =55deg) it will blub,blub,blub,blub for a few seconds before it will kick up to 1k.

Its very un-japaness like. My Camrys were always very electric like smooth. Turn the key and the motor is on and stable regardless of temp. They were also V6's.
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Old 05-24-2005, 11:42 AM   #8
scooterforever
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FYI -- however you conclude on the idle issue (e.g., if you conclude it's fine), I'd think about leaving the AEM CAI off, and stick with the stock intake. There are some mods you can do if you want to improve the sound, but performance wise, the CAI isn't going to help IMO.
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Old 05-24-2005, 07:52 PM   #9
WRXskeet
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thanks guys, but dose anyone know a fix for this? i mean, this isnt normal it never happend before, the idel i can live with, but when i start it up, its shoots down below 500rpm's and Almosts stalls, what is up with that? dirty maf or something??

thanks
-nate
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Old 05-24-2005, 08:12 PM   #10
scooterforever
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Quote:
Originally Posted by WRXskeet
thanks guys, but dose anyone know a fix for this? i mean, this isnt normal it never happend before, the idel i can live with, but when i start it up, its shoots down below 500rpm's and Almosts stalls, what is up with that? dirty maf or something??

thanks
-nate
I took a look at my idle behavior, and even warm, it shoots up about 1k before resting at 750. Yours seems to jump right to 750 pretty quickly.

Here's something you can try: clean out the Idle Air Control Solenoid Valve (the IACV). It is located on top of the Throttle Body. It is secured to the TB by two screws (careful, they are soft). Too high idle or too low idle can be caused by a dirty IACV. My rough idle (ran to zero) was solved by cleaning the IACV. I have (to other people) committed to do a FAQ on how to clean theh IACV. So... I will try to post up a long how-to tonight, together with part numbers for the replacement gasket. Before I do that, however, let me give you the abridged version: remove the IACV by unscrewing the two screws on top -- careful, they are soft. You should have a replacement IACV gasket ordered and in hand before you open the IACV. The IACV gasket separates coolant flow from the throttle body, so if you tear this gasket you will get coolant in the throttle body. In other words: coolant in the intake. Lots of white smoke . The catch is, the gasket expands under use, so yours may be too deformed to close the IACV again. In other words, have a replacement handy. Once removed, cleaning can be accomplished (from what I have been told. I followed the Q tips and rubbing alcohol approach) through the following means:

1. invert the IACV and fill it with gasoline. Let a minute or two go by. Poor out gasoline. Wipe clean with Q tips.
2. dip Q tips in rubbing alcohol. Gently swab the IACV with Q tips. Mine took about 20 to clean.
3. spray IACV with WD-40 or carb cleaner. Swab with Q tips.

Replacing the IACV can be tricky if you don't know what to do. Search under my user name for a post with pictures on how to do this. Basically, you need to drive under vacuum (no boost) for about 10 minutes to seat the new gasket.

Again, stay tuned. My "how to clean" FAQ will be posted soon.
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Old 05-24-2005, 08:16 PM   #11
WRXskeet
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thanks alot man, im looking forward to your write up

-nate
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Old 06-14-2005, 07:20 PM   #12
TypeC
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Subscribe.
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Old 06-14-2005, 07:41 PM   #13
eltrouble
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there's already the IACV writeup, no need to subscribe. it should be stickied...
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