OBS LS Swap help

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Originally Posted by Alvin

You are likely fighting a sloppy throttle body.

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I went out and worked on the tps/iac. I ended up slotting it as it went down to .37v. I locked it down at .47. I worked on the raf and some blade adjustments. The air flow desired went nuts. This log was on my way home. The truck kept going lean in closed loop. I had to fight it home. That when I noticed on the log the idle desired shot through the roof.

This isnt the first time the truck stalled out or went lean. There are some demons in this truck.
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Quote:

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Originally Posted by Fast4.7

You need to tune IAC Effective Area once you have a lot of other things tuned. I put everything back to stock that people tinker with trying to get their setup to idle and tune that one table and it often fixes everything with aftermarket throttle bodies.

https://youtu.be/621bcy3Epzo?si=BX1PgIYxzbdCgPs4

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check out the recent log. I worked on the tps/iac/raf. I need to look back at some logs and see if the idle desired is shooting up all the sudden.

Attachment 162835

This log shows the o2's go into closed loop and basically not switch. It will run enough in open loop. I think its time for this truck to go back to its owner. It came with issues. I tried to not give up. I am tired of being on the side of the road. This truck will run ok but then go hulk smash out of nowhere.

I am going to suggest a nick williams throttle body, new o2's, and the wiring gets gone through.



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