2000 5.3 Truck Norris Cam

[ns158sl]

Ok so a quick glance. You need to bring up the timing in the high load low rpm cells. You can see when you put a load on it, it is going into the negative timing cells. Also I don't know if I would keep going much more until you get that KR figured out. I cant believe they are picking up the cam misfires but maybe. So either there is some rattling around in the engine bay setting them off, or for now, disable all knock learn in the idle areas. I dont think you should be logging MAF in the pids either. Can't remember the details, but i thought it would skew dynamic airflow, I could be way off lol. Youd have to search that.

[showelljr]

Ok so a quick glance. You need to bring up the timing in the high load low rpm cells. You can see when you put a load on it, it is going into the negative timing cells. Also I don't know if I would keep going much more until you get that KR figured out. I cant believe they are picking up the cam misfires but maybe. So either there is some rattling around in the engine bay setting them off, or for now, disable all knock learn in the idle areas. I dont think you should be logging MAF in the pids either. Can't remember the details, but i thought it would skew dynamic airflow, I could be way off lol. Youd have to search that.

Crawled around it a good bit when I was installing the WB sensor and grabbed things to see if they were loose, tapped on things to see if anything sounded loose or such and didn't find anything out of line to make me go back and double check it.

Its dumb early as I am back on the 3a-3p shift again, but does the P01 reliably log misfire data for the individual cylinders? I will pull some of the pids out and add those in to see if its isolated to a cylinder or all of them. My thinking is a single cylinder, I'll start there, but all of them and maybe its just the cam setup?

Sitting there idling it is just a tad rich, its richer on startup, but really never shows more than a 1.01 EQ idling.

Thanks
Steve

[ns158sl]

You need MAF enabled for misfire detection. I'd do a quick search on idle knock, and/or turn them down/off at idle.