Did somebody say GILF?

 

I'll swap the knock sensor I guess. Work has me all sorts of tired recently and I am not sure why

This has happened to me twice in the past week now but for some reason the light actually turned off on my way to work today, very strange and I have no idea why. My gauge cluster is a little messed up though but when I turned the truck off then on again the CEL did it's normal light up and then go out so the bulb is not bad yet.

 

Replaced the knock sensor today. Not sure if this is possible but I think it got worse. I did take a log and forgot to save it but I’m getting spikes of like 5 degrees. I’ll get another in a bit but I really don’t understand.

No CEL yet so I’ll just wait for that. I just see it on the logs, it is random just spikes up and then back to 0.

 

Went and got another log, as you can see uh this **** sucks. Now the code is on the other one. I just don't understand, it tested fine when I tested everything. I'm gonna drive it for a while and see what happens, still no CEL and I have turned the truck on and off a few times and drove around 30 miles, normally it pops at 50 or so.

 

Honestly I would just turn the codes off. The knock sensor can still function if the codes are turned off. I've had to do it a few times even when replacing with GM sensors.

 

That was my next step to be honest. That sensor hadn’t made a peep until now. Just so awkward and gay

 

Woah woah wait a second, maybe I'm crazy but I think I have a fuel mixture problem.

Hear me out, all the 8 degrees of retard only happens at .6 g of cylinder air mass. I think it is common to have the other slight retards that I am getting around the rev range but I took another log just 10 minutes ago and same thing. Not a single degree of retard happened except at .6 g of cylinder air mass.

I have a slight understanding of cylinder air mass and how it is calculated but I think it has got to be something wrong with my fueling.

Opinions, questions, ideas?

Edit: Btw I am running NGK Iridium IX plugs. I was told previously to switch to the TR6 plugs, I may go ahead and order them to try that out.

 

The polling rate for some of the channels in HP Tuners aren't exactly the same. To me from what I see, every single time you enter PE, it spikes the knock to 8 degrees.

The engine is usually right around that .55 to .58 cylinder airmass when it happens on your logs.

 

Ah okay so I'm about correct in the direction I think I need to look?

 

In my opinion, no.

The knock sensor code is triggering the max knock pull. It's not going to spike the knock retard like this if the fueling was a little off, you'd have to be running like 17+ AFR or something on some crap 87 octane to maybe see that.