Has anyone ever had a problem with PE engage sometimes and then on the next log it wont? Same conditions just a few hours later.
E38 2012 Silverado turbo 5.3
I have Hot TPS table set to 5% across table and I am using KPA to engage PE. I have it set to engage PE at 110 kpa. Enable rpm is 1000 and rate is 1.3 .
Current tune is MAF open loop and afr is dialed in.
After I loaded tune with these settings truck ran great and for 2 runs and pe would engage everytime between 1-2 psi. Then truck sat for a few hours and then went to run again and PE would never engage even at 4 psi. This is the second time this has happened. After the first time I reloaded tune with minor changes and it worked again for 2 log runs and then turned truck off let it sit for a while and then ran it again and PE will never command. It seems to be on the 3rd run after a reflash everytime. I will post a log and file when I get a chance I have some pictures I am trying to upload right now.