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Old 04-09-2007, 08:31 PM   #1
Brettweiser
Scooby Newbie
 
Member#: 144467
Join Date: Mar 2007
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
2007 WRX
Urban Grey

Default High Idle, Rough Idle?

So I am just starting to notice that almost everytime i start my 07 WRX it shoots up to about 2000 RPM and slow bounces down over the next 2 mins or so. If i drive it right off the bat it will still run high for a few but eventually come down to about 750. I also have been getting a rough idle too sometimes feels like one of the cylinders might be missing but the engine sound is fine. The only mod i have is the Cobb TBE. Any ideas? TIA
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Old 04-09-2007, 09:33 PM   #2
sexyyrex
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Chapter/Region: Tri-State
Location: Danbury, CT
Vehicle:
2009 WRB STi
2007 Nissan Altima

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Quote:
Originally Posted by Brettweiser View Post
So I am just starting to notice that almost everytime i start my 07 WRX it shoots up to about 2000 RPM and slow bounces down over the next 2 mins or so. If i drive it right off the bat it will still run high for a few but eventually come down to about 750. I also have been getting a rough idle too sometimes feels like one of the cylinders might be missing but the engine sound is fine. The only mod i have is the Cobb TBE. Any ideas? TIA
you must be new to the scooby world
welcome to subaru, home of rough idle, high rpm warm ups, boost creep with no EM on a 2.5...hint hint, and broken trannies if abused or not driven right
haha
enjoy

btw, i love mine so dont get me wrong, its an amazing car, just treat it right, and she'll treat you right, dont treat her right, and she'll slap you in the face harder then any girl before X 10
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Old 04-09-2007, 09:49 PM   #3
nhluhr
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2006 Wrangler Sport

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The idle speed is dependent on coolant temperature.

On cold start, when the temperature is 104F or cooler, the idle speed should be 1500. If the coolant temp is -4 or colder, it will be 1700. As coolant temp rises, it approaches 700 at 176F.

Turning on the AC (or main defroster) will raise idle by 100rpm.

If the idle is higher than specified, it is possible you have a malfunction in the DBW system or a vacuum leak in the intake tract.
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Old 04-09-2007, 11:10 PM   #4
Brettweiser
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2007 WRX
Urban Grey

Default

yes i am new but thank you for the good advice I just wanted to make sure i hadnt pissed her off allready
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