idle at 500 rpm??
Registered User
Joined: Dec 2003
Posts: 144
From: New Freedom, PA
Car Info: 2004 WRX Sedan 5spd
Yes, the engine idle's at a higher rpm to help warm it up faster. It also seems logical that because oil is so much more viscous at lower temps that the engine needs to spin faster to keep running until the oil warms (although I don't know how much stock to put in that theory). As far as I know pretty much all cars have this fast idle feature when cold. Atleast any car new enough to have a computer. All of my parents cars (Chevy Silverado, 2 Saturns, Mercury minivan) that I drove in high school fast idled in the cold.
Registered User
Joined: Nov 2002
Posts: 172
From: Saint Louis, MO
Car Info: 06 Armada, 03 WRX, 05 STi(sold), 05 Vette (sold)
My WRX liked to idle a touch higher... So I raised it to idle at 1000 RPMS.
-Mike
www.axispowerracing.net
-Mike
www.axispowerracing.net
VIP Member
Joined: Mar 2003
Posts: 2,023
From: Phoenix, AZ
Car Info: Subaru Impreza WRX 2002
I think the "rough" idle of my 02 WRX is "cute" for some reason -- it just gives me a grin every time. It reminds me so much of the Porsche 912 my dad restored while I was in high school...
Registered User
Joined: Dec 2002
Posts: 68
From: east coast of FL
Car Info: bugeye ej257 / 6MT / cusco lsd
I noticed when I first added my turbo-back that my idle droped approx 250rpm. Then I put the stock back on and it ran at 750 again. So I think it could have somthing to do with back pressure.
Anyone else have a similar experiance?
Not that I mind having a low idle, just curious.
Anyone else have a similar experiance?
Not that I mind having a low idle, just curious.
Registered User
iTrader: (7)
Joined: Nov 2002
Posts: 820
From: San Jose-near milpitas
Car Info: 03 Wrx black sedan + 2013 BRZ
Originally posted by compton
I noticed when I first added my turbo-back that my idle droped approx 250rpm. Then I put the stock back on and it ran at 750 again. So I think it could have somthing to do with back pressure.
Anyone else have a similar experiance?
Not that I mind having a low idle, just curious.
I noticed when I first added my turbo-back that my idle droped approx 250rpm. Then I put the stock back on and it ran at 750 again. So I think it could have somthing to do with back pressure.
Anyone else have a similar experiance?
Not that I mind having a low idle, just curious.
Jason
VIP Member
iTrader: (3)
Joined: May 2003
Posts: 3,648
From: SBAIC-South BayArea Impreza Club-Campbell, CA-Thur
Car Info: 2003 PSM STi
Originally posted by IcemanSS454
Yes, the engine idle's at a higher rpm to help warm it up faster. It also seems logical that because oil is so much more viscous at lower temps that the engine needs to spin faster to keep running until the oil warms (although I don't know how much stock to put in that theory). As far as I know pretty much all cars have this fast idle feature when cold. Atleast any car new enough to have a computer. All of my parents cars (Chevy Silverado, 2 Saturns, Mercury minivan) that I drove in high school fast idled in the cold.
Yes, the engine idle's at a higher rpm to help warm it up faster. It also seems logical that because oil is so much more viscous at lower temps that the engine needs to spin faster to keep running until the oil warms (although I don't know how much stock to put in that theory). As far as I know pretty much all cars have this fast idle feature when cold. Atleast any car new enough to have a computer. All of my parents cars (Chevy Silverado, 2 Saturns, Mercury minivan) that I drove in high school fast idled in the cold.
-Ted