Idle speed adjustment not working ...
Hmmm ... I don't think that table exists for my v.15 IX ROM. I'll take a second look, but that would have been obvious. It was mentioned that it might be truncated, but I think the stepper values are the truncated ones. Thanks for the info.
EvoM Guru
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From: Tri-Cities, WA // Portland, OR
This isn't the way to adjust idle. This screw is meant to be used to set the "closed" position for the throttle butterfly. The ECU will try to compensate for any adjustments made with this screw.
On 8's, setting the idle is straightforward, you just set the Desired Idle RPM-Neutral and with AC on. You set it at what you want and it does it.
On the 9's, it seems to not take as well. Something I have been looking into for awhile. MrFred, maybe you can find additional tables for the 9's?
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No the tables are there (Desired Idle RPM-Neutral/Drive), but it seems like the car doesn't take to the changes as the 8's do. You can set idle to 1000 rpm, it will do it for a second then drop down to 700-800 like you didn't change anything.
I am beginning to think either the defs are wrong or there is some other tables it's using as well.
I am beginning to think either the defs are wrong or there is some other tables it's using as well.
Yay! So I'm not crazy ... There is no easy adjustment for idle w/ AC on on the IX ...
These are the idle tables on the v.15 ROM:
And here are my values in the same order as listed above:
These are the idle tables on the v.15 ROM:
Code:
<table name="Desired ISCV intial step position with AC off-Neutral" address="3d24"> <table name="Engine Temp" address="70c2" elements="8"/> </table> <table name="Desired ISCV intial step position with AC off-Drive" address="3d38"> <table name="Engine Temp" address="70c2" elements="8"/> </table> <table name="Desired ISCV intial step position with AC on-Neutral" address="3d4c"> <table name="Engine Temp" address="70c2" elements="8"/> </table> <table name="Desired Idle RPM-Neutral" address="3d60"> <table name="Engine Temp" address="70c2" elements="8"/> </table> <table name="Desired Idle RPM-Drive" address="3d6e"> <table name="Engine Temp" address="70c2" elements="8"/> </table>
Yay! So I'm not crazy ... There is no easy adjustment for idle w/ AC on on the IX ...
These are the idle tables on the v.15 ROM:
And here are my values in the same order as listed above:
These are the idle tables on the v.15 ROM:
Code:
<table name="Desired ISCV intial step position with AC off-Neutral" address="3d24">
<table name="Engine Temp" address="70c2" elements="8"/>
</table>
<table name="Desired ISCV intial step position with AC off-Drive" address="3d38">
<table name="Engine Temp" address="70c2" elements="8"/>
</table>
<table name="Desired ISCV intial step position with AC on-Neutral" address="3d4c">
<table name="Engine Temp" address="70c2" elements="8"/>
</table>
<table name="Desired Idle RPM-Neutral" address="3d60">
<table name="Engine Temp" address="70c2" elements="8"/>
</table>
<table name="Desired Idle RPM-Drive" address="3d6e">
<table name="Engine Temp" address="70c2" elements="8"/>
</table>
the definitions are misleading..
neutral means stationary idle
drive means moving idle (ie coasting down at neutral gear)
when you change the idle values.. you DO need to adjust the BISS if the target idle and set idle is way off.. but rotate slowly every 1/4 turn and wait.. then check target idle with engine rpm.. do this until they are within 50 rpms.. its a pain..
neutral means stationary idle
drive means moving idle (ie coasting down at neutral gear)
when you change the idle values.. you DO need to adjust the BISS if the target idle and set idle is way off.. but rotate slowly every 1/4 turn and wait.. then check target idle with engine rpm.. do this until they are within 50 rpms.. its a pain..
EvoM Guru
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Last edited by mrfred; Jun 26, 2007 at 09:08 PM.
The values I posted are modified. I tried adjusting the values as mentioned in the first post. I think I'm with Mrfred on the drive table .. it's probably for the auto. I thought it was for rolling with the clutch in, but that really doesn't make as much sense.
Mrfred, the values you posted look like my stock values.
Mrfred, the values you posted look like my stock values.