Curious if you tried disconnecting the battery for 10 minutes after running through all the premium fuel in the tank and filling with 87 octane... This will clear the adaptive programming in the computer and return it to baseline. This worked for my pinging issues...

 

I was under the impression only the automatic transmission controller had adaptive programming.

 

Maybe that explains why it fixed my JK. Not sure on that but its worth a try, don't you think?

 

Mine does it under load but not WOT. It only does it when the engine is warmed up and especially when it is hot out. Jk's already have very high under hood temps which doesn't help. I'm sure there are many factors in to the very common pinging problem on the jk's and there is definitely a proven correlation between oil consuming motors and detonation. That is a documented fact. Not to say the problem only affects the consuming motors because that obviously isn't the case. A good friend of mine is the the service manager at the Chrysler dealership. He sees quite a few jk's with consumption and pinging issues and he has seen bad knock sensors and high levels of carbon build up on many of the motors. When I took mine in for the pinging originally they reflashed the pcm (assumed to retard timing) and it got better. 3k miles later took it in because problem had re occurred. Had oil changed at same time and was 2 1/2 qts low. Also changed the pcv valve which was gummed up at this time and started a consumption test. That is where I am now, and still get pinging although not as bad. Assuming because of colder temperatures. The end lol

 

What's on the outer ring of the torque converter that would monitor torque?

 

Ok guys with this pinging noise listen up! I had the exact same thing with my 2010 jk 2 door around 16,000 km. it started out only doing it when it was really hot and under load, also I have a 6 speed, so I did all kinds of stuff and the only thing that made it go away for a short period of time was better gas but it didn't really go away. I have a very good realationship with my dealer do I asked them about it and they had me get it really hot and take one of there techs for a drive and he heard it and said that's an easy fix! I said ok fix it lol he told me they need my jk over night and so I left it with them, the next day after work went and picked it up and it sounded like new again, I didn't get the full story of what they did but they said it was carbon build up and they had to fill the intake with something and let it sit over night and soak down, then start it up and hold it at 4500 rpm from cold till it was done a full cycle, which I think means goes into open loop? But my jeep was perfect for about 15,000 km and now it's back, and to the one guy asking about power loss, if you couldn't here the noise you would never notice a difference, these motors are dirty, just pull off your throttle body and look at the back of it and you will see what I meen, call the dealer and ask about the procedure I just talked about, I will call my buddy at my dealer tomorrow and find out exactly what they did and what they used , try pulling the air box and using a good throttle body cleaner and see if it makes a difference, hope this helps man it's not a nice noise for a $30,000 + truck that we are still paying for
Cheers: Dylan

 

Lets see...my Chevy work truck pings every single day and it has over 300k on the original motor...hmm guess the pistons are still good. Does a heat shield stop rattling if you run 93 octane? Didn't think so. I am by no means a mechanic but you are wrong on a lot of things here. And you want documentation? Dude there are a million threads not only on here but all over the internet. I guess we are all full of shit. If you can tell me and all the many many others on jere

 

Here how to fix our problems than please help us. If you just want to tell us were idiots find another thread

 

Oh yea and if it helps there's no way I could make it happen in neutral does yours only do it when driving?

 

And yet another pinging not heat shield rattle case....just as I was saying. I do believe carbon build up is playing a big part in these problems. I may need to try this next. Thanks for the info