Is there a way to park the IACV for idle reset without evoscan?
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From: jerusaslem
Is there a way to park the IACV for idle reset without evoscan?
Hi there!
Poor student here with an Evo 8.
Idle in Park sits dead at 850rpm in Park and 500 with AC On in 1st, too low! Little shaky.
I removed the TB for some love and care and installed another IACV to no avail.
I then followed to install a brand new throttle body to no avail.
BISS screw is about half a turn from bottoming out.
IIs there a trick to park the ICV at mid point without evoscan? Perhaps adjusting the biss will fix it up even though it's perfectly fine with a 850 idle in Park - It's the AC ON/in gear idle that's too low, it seems like the ICV is not compensating!!
Poor student here with an Evo 8.
Idle in Park sits dead at 850rpm in Park and 500 with AC On in 1st, too low! Little shaky.
I removed the TB for some love and care and installed another IACV to no avail.
I then followed to install a brand new throttle body to no avail.BISS screw is about half a turn from bottoming out.
IIs there a trick to park the ICV at mid point without evoscan? Perhaps adjusting the biss will fix it up even though it's perfectly fine with a 850 idle in Park - It's the AC ON/in gear idle that's too low, it seems like the ICV is not compensating!!
Last edited by lancerking500; Mar 11, 2025 at 04:18 PM.
I cannot afford to go to the mechanic, how depressing 
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Joined: Feb 2025
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From: jerusaslem
No Sir! I do have some cheap iGate bluetooth scanner that can do codes (I also saw some XML input function there) But that's it.
I was wonderirng if there's a manual way to center the ICV, unplugging it and then adjusting BISS.
I was wonderirng if there's a manual way to center the ICV, unplugging it and then adjusting BISS.
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Joined: Apr 2011
Posts: 869
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From: WI
I'd say your best bet is to get evoscan and a cable. Its pretty affordable and super useful.
I have been fighting idle issues with the AC on in my car for the last couple of years but I have cams whatnot so its a bit more complicated. At this point, I just only run the AC on the highway and turn if off around town.
I have been fighting idle issues with the AC on in my car for the last couple of years but I have cams whatnot so its a bit more complicated. At this point, I just only run the AC on the highway and turn if off around town.
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