Stuck In PE/Open Loop

[gbbmk]

Hello all,

I am a first time poster, I read a tone of info on here. Anyway I am dealing with a huge issue that has plagued me and my tunner through two engines.

I am running a 04 silverado ecsb lq4 prc 2.5 5.3 heads, toruqer v2 cam, tbss intake, lts, no cats, gibson exhaust, mild built Tranny, tuned my Bryan Herter from PCM for less.

I previously had a 5.3, 243 heads, 224/224 cam, tbss intake, lts, no cats, gibson exhaust. 343 rwhp tuned my Bryan Herter from PCM for less. (blown to smitherines)

Ok what has been happening is when in second gear and above when I am at wot and I hit redline and shift. I stay stuck in open loop or PE. My ltfts will still move but my stfts are zero and my o2's are at 0.9. If I wind out in first this does not happen. Only 2nd and third. The only way for this to reset to closed loop is to turn the truck off for a min. I am running a blue tooth with Torque app. I have also tried this on another app called OBD DroidScan and I get the same result. I have not verified this with HPT or another direct connection scan software yet. I have no vacuum leaks and other then this the truck runs great. This issue has happened with both motors so it is in either the tune, the loom or a sensor.

Things i have tried so far.
Replaced MAF
Replaced O2's
swapped PCMS
Rebuilt tune from another 6.0

I have tried shutting both apps off and unplugging and restating the apps to see if it was an app issue. Not luck

I am at a loss and so is Bryan. The last street tune we (he) was able to get the ltfts to stay on before the ltfts stayed at 0 also. Because the ltfts move after i let off leads me to believe it is not pe but getting stuck in open loop for some reason.

I would appreciate any help in trouble shooting or is anyone has dealt with this before.

Thank you for your help

[farmtruc]

Try a different OS and start over with the tuning.
Use the correct PCM service number for the year of truck and start with a PCM that has been flashed with a stock calibration.
No mixing and matching and over writing tunes on top of tunes.
Starting fresh sometimes and taking it one step at a time is quicker than trying to figure out what was fat fingered or trying to understand what glitch is causing the issue. It's a computer; probably running win98

It's no big deal but I just encountered something similar on a truck this week.
The above cleared it up.

Just a suggestion.

[blacstar]

another suggestion, try nelson performance. they fixed the tune on my truck that another guy messed up!