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ECMlink Cold idle issue that only occurs in colder weather

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Dyesuperman

10+ Year Contributor
523
22
Mar 10, 2009
Minot, North Dakota
I've had this issue as long as I have owned the car and have decided that I am tired of it enough to try and be more proactive in figuring out what is causing it. Basically I start the car up, it does fine, then the o2 starts cycling and it dies when the o2 cycles to lean. Does this over and over until it reaches around 110* coolant temp. I can give it some throttle to keep it running, but I would rather not do this every dang time I start the car in the cold. I finally took a log of a full cold idle with the car dying and me starting it up and such. I know the o2 cycles and then it dies, but it isn't normal for it to cycle like it does when it is colder out. Problem goes away after the car has warmed up as seen in the log.

Mods if they help any:

E85 (does the same thing on pump gas too, I tried switching last winter as well)
Speed density
1g cas
innovate lc1
stock intake manifold
1g tb
vrsf fmic
tial bov
t3 holset hx35
stock block
hks 272 cams


And the important part is attached, a log of the issue. Let me know if you guys have any ideas, help is much appreciated. I am sending my injectors in to Tom here soon for testing to have proper deadtime values and such, hopefully that helps a bit if nobody has any suggestions

Thanks,

Caleb
 

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I´m at work now so i can´t check the log but have you changed the O2 sensor? when you start the car does it revs by itself at around 2k rpm and starts dropping slowly as it warms up? if not maybe your ISC is out of range or is dead?

I've swapped out o2 sensors and have swapped out ISCs...still no change. It will rev by itself for about 30 seconds if that (I didn't check the log to see exactly), then it starts cycling
 
Hey man just got home I tried to open the log but it says "incompatible file version while reading ByteRecord" on dsmlink program on a PC what version link are you using? I downloaded it a few times just to make sure it wasn't my computers fault and I have the program up to date too! Can you upload again?
 
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