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8859 SD pump gas stalling when reaching 140 degrees F

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Old Oct 18, 2018, 07:10 PM
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8859 SD pump gas stalling when reaching 140 degrees F

Hey guys,

Been trying to track down this issue for a little over a year now. I converted to speed density awhile ago, had this issue ever since. While warming up it will start up and run fine up until about 135-145 degrees F or 60 degrees C what i have noticed is it will go full lean and start to sputter and eventually die. If I feather the throttle to get it past ~66 degrees Celsius it will run fine until operating temp and warm. Scalings and latencies are fine. Just at a loss. Thanks for the help I can post logs and current settings, a video if requested.
Old Oct 26, 2018, 08:34 AM
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Do you have logs and ROM?
Old Oct 28, 2018, 09:42 AM
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Originally Posted by jmedina23
Do you have logs and ROM?
sure, I'll try and get one up when I get to my computer
Old Oct 29, 2018, 06:39 PM
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Here is a log and the current rom I am using. Thanks.

1250cc fic
DW 300lph
Speed density
GM AIT
2.3L
Crower M2 cams
gt3582r turbo
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Old Oct 30, 2018, 04:45 AM
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Originally Posted by hiboost2.0
Here is a log and the current rom I am using. Thanks.

1250cc fic
DW 300lph
Speed density
GM AIT
2.3L
Crower M2 cams
gt3582r turbo

Looking at the data log, I don't see the AFR Ratio enable. Make sure you enable it so I can see this value. I did look at the ROM, did you convert the car SD? It seems to me map is pulling a lot of fuel from everywhere. Did you add the right injector latency? If you have any videos when starting the car showing the AFR that helps too.




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