so now i c that its doing it at high speeds everytime at wot.. so i decided to log the truck.. these are 2 logs of when i get check engine light, and reduced engine power with code p1516.. can anyone tell reason for this? attached are logs.. thanks for any help available..

 

anyone else ever had this problem? after some reading looks like it might b the tb.. ill b changing it out soon and c what happens..

 

Are you still having this problem? If not what did you do to fix it?

 

I switched my TB ..the tb was the issue

 

Thanks

 

I was also having this problem. I had an 87mm truck TB, and was getting P1516. I was told to try a different TB, so I bought an LS3 TB off of Ebay new. I then got P2101. I have tried everythign to get rid of P2101 with no luck. I ended up putting my 87mm truck TB back on, and messing with the tune. After spending quite a bit of time on it I have not had P1516 in quite a while. I think it is mainly because the TB isnt physically opening up 100%. Like in your first log, you are only maxing out at 98%. I changed that in the tune, and disabled some stuff in the tune, and it has worked. If someone is using EFILive, I would be happy to look at a tune and a log for them.

 

well i havent had that code shoot up in like 2 weeks.. altho last week i didnt really drive the truck.. i changed the 87mm tbss to a ls2 90mm and adjusted the xlink acordingly .. and yea i was only getting 98% on my 87mm and now i only get 97.4 i belive..lol funny stuff..