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Old 02-20-2015, 11:46 AM   #1
Moejazzur
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Member#: 411305
Join Date: Jan 2015
Chapter/Region: MAIC
Location: Lancaster, PA
Vehicle:
2004 WRX
Java Black Pearl

Default runaway subaru engine

This morning it was -3. When i started my car it did its normal procedures, along with lots of strange sounds just because its so cold. Usually the engine idles at 1800 rpms and drops to 1500 after about 2 minutes. Instead of slowing down after those 2 minutes it slowly started to climb to about 3000 rpms so i shut the car off. After restarting it didnt do it again. Stock 2004 wrx. No i did not have my foot on the gas.

Sometimes when im driving while its warmed up and im at a stop light it will idle at about 1200 rpm. Usually its at 600.

Can anyone shed some light on this? Thanks.
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Old 02-20-2015, 12:13 PM   #2
m71owner
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Member#: 332321
Join Date: Sep 2012
Location: grand rapids mi
Vehicle:
1998 2.5rs
wrb

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Search a little bit this is on here quite a bit. I know that's not the answer you want to hear but that's what I got haha.
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Old 02-20-2015, 12:48 PM   #3
axelthrasher
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Chapter/Region: MWSOC
Location: In the land up over
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200X ZOMG a car 100%
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Check your throttle cable, it may be slightly out of adjustment. Make sure there is play in both cables (upper and lower), if you have either one taut, you get some weird partial open TB issues.
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Old 02-20-2015, 12:52 PM   #4
DatGriff
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Join Date: Oct 2013
Chapter/Region: MAIC
Location: rva
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2003

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Try cleaning your IACV on the throttle body. Just be careful with the screws. They're ridiculously soft. I'd recommend getting replacements from the hardware store honestly. There are a couple threads about it with pictures.
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Old 02-20-2015, 02:24 PM   #5
HinshawWRX
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Location: Common Sense, VA
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GT3 (Currently on Fire)

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Idle air control valve, clean it.
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Old 02-20-2015, 04:52 PM   #6
2004wrxy
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Location: Nova Scotia, Canada
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Quote:
Originally Posted by axelthrasher View Post
Check your throttle cable, it may be slightly out of adjustment. Make sure there is play in both cables (upper and lower), if you have either one taut, you get some weird partial open TB issues.
This ^^^
and this...

http://forums.nasioc.com/forums/showthread.php?t=781242
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