Poor Cold Idle (Yes I searched)
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From: Northern KY near Cincy
Glad it is working out for you.
We have a new discovery for a cold fuel table. Once I varify the results I will certainly post them up. From initial testing the lean that we see when trying to drive below 2000 rpm when cold can be tuned out. More to follow.
We have a new discovery for a cold fuel table. Once I varify the results I will certainly post them up. From initial testing the lean that we see when trying to drive below 2000 rpm when cold can be tuned out. More to follow.
I would like to thank appauld, and every1 who has contributed to this thread! As of today (need to drive a couple days to confirm) but I believe my cold start issues are now ~ 95% gone!
I have been following this thread since day 1, and have been making changes as you guys test things out, gradually getting better w/ each find... Well last night I made what I believe to be one of the last changes I need to make for "cold start" issues. I have NOT even jumped into the new ISCV tables, although theyre now in my rom...
I re-read the all of the threads I could find reguarding "idle", decided it was time to log ISC steps and coolant temp, and make some changes to the idle tables w/ AC on in nuetral, and in drive w/ out AC, and noticed that what I was seeing in my logs were way under what I was seeing in the maps... So I just made the changes per log, and sure enough the idel has smoothed out considerably! And no more raising of the idle when dropping it in to nuetral to cruise to a light... Like I said, I need to drive for a couple days to confirm, but quite happy @ the moment... this is a IX in ~ 45* weather, so not exactly "COLD" starts, but when the motor is cold...
I have been following this thread since day 1, and have been making changes as you guys test things out, gradually getting better w/ each find... Well last night I made what I believe to be one of the last changes I need to make for "cold start" issues. I have NOT even jumped into the new ISCV tables, although theyre now in my rom...
I re-read the all of the threads I could find reguarding "idle", decided it was time to log ISC steps and coolant temp, and make some changes to the idle tables w/ AC on in nuetral, and in drive w/ out AC, and noticed that what I was seeing in my logs were way under what I was seeing in the maps... So I just made the changes per log, and sure enough the idel has smoothed out considerably! And no more raising of the idle when dropping it in to nuetral to cruise to a light... Like I said, I need to drive for a couple days to confirm, but quite happy @ the moment... this is a IX in ~ 45* weather, so not exactly "COLD" starts, but when the motor is cold...
This is great news, I'm really getting tired of the lean issue.
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From: Northern KY near Cincy
Here is the warmup fuel table. Please take a look and see what you all can do with it.
It is for v7 9653 roms.
<table name="***Warmup Enrichment Load vs RPM" address="6071" category="Global Ignition Settings" type="3D" level="1" scaling="uint8">
<table name="Engine Load" address="66f2" type="X Axis" elements="14" scaling="Load"/>
<table name="Engine Speed" address="7adc" type="Y Axis" elements="8" scaling="RPM"/>
</table>
It is for v7 9653 roms.
<table name="***Warmup Enrichment Load vs RPM" address="6071" category="Global Ignition Settings" type="3D" level="1" scaling="uint8">
<table name="Engine Load" address="66f2" type="X Axis" elements="14" scaling="Load"/>
<table name="Engine Speed" address="7adc" type="Y Axis" elements="8" scaling="RPM"/>
</table>
Paul, have you tried this fuel table yet? I actually drove off with the car cold yesterday and I finally saw what you guys were talking about with the car going lean in certain RPM spots when the car is cold... I rarely ever do that but we needed to go pick some stuff up last minute for todays festivities...
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I successfully used the maf comp vs coolant temp tables to correct my lean cold start and cold driving issues.
<table name="MAF Comp vs Coolant Temp #1" category="Fuel" address="3722" type="2D" level="1" scaling="uint8">
<table name="Coolant Temp" address="69d8" type="Y Axis" elements="9" scaling="Temp"/>
</table>
<table name="MAF Comp vs Coolant Temp #2" category="Fuel" address="3712" type="2D" level="1" scaling="uint8">
<table name="Coolant Temp" address="69d8" type="Y Axis" elements="9" scaling="Temp"/>
</table>
I used these because at the time I skipped past that other table. No ill effects either over 2500 rpms, everything is acceptable until warmed up.
<table name="MAF Comp vs Coolant Temp #1" category="Fuel" address="3722" type="2D" level="1" scaling="uint8">
<table name="Coolant Temp" address="69d8" type="Y Axis" elements="9" scaling="Temp"/>
</table>
<table name="MAF Comp vs Coolant Temp #2" category="Fuel" address="3712" type="2D" level="1" scaling="uint8">
<table name="Coolant Temp" address="69d8" type="Y Axis" elements="9" scaling="Temp"/>
</table>
I used these because at the time I skipped past that other table. No ill effects either over 2500 rpms, everything is acceptable until warmed up.
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From: Northern KY near Cincy
Paul, have you tried this fuel table yet? I actually drove off with the car cold yesterday and I finally saw what you guys were talking about with the car going lean in certain RPM spots when the car is cold... I rarely ever do that but we needed to go pick some stuff up last minute for todays festivities...
As soon as I am finished I will load it up. From the looks of it though it seems that the scaling on the table is a little odd. We will figure it out.
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From: Northern KY near Cincy
I did some testing today and had great results. I made the low RPM values all = 128 and the car started and ran perfectly when cold. It was in the teens today so the car ran cold for a bit.
I did notice though, for some odd reason, when i first started the car and touched the gas the rpm shot up to 2000 and stayed there for a few seconds before returning to normal. I do not think this is related to the new table though.
To be quite honest, my car has never ran as well as it is now. v7 and our cold findings are the schiznit.
Paul
I did notice though, for some odd reason, when i first started the car and touched the gas the rpm shot up to 2000 and stayed there for a few seconds before returning to normal. I do not think this is related to the new table though.
To be quite honest, my car has never ran as well as it is now. v7 and our cold findings are the schiznit.
Paul
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From: Northern KY near Cincy
Jeff.....I have not put in the IAC yet. I think I have a small vacuum/boost leak that may be culprit. I am getting higher than normal boost taper (27 down to 21) so new vacuum lines are in the works.