Truck: 2001 24 valve auto trans - Recently i replaced long block replaced after 53 block cracked and valve port cracks awhile back - ARP studs - Draw Straw - Dynomite diesel 50hp injectors - Reman HY35
Problem: feel like my truck has lost power and has trouble changing gears and building boost.
When i try to go up a hill (not towing) if i do not keep OD off and stay with about 3-5 lbs of boost my truck will completely lose power and boost and completely lag up a hill.
i have to either let off of the pedal a bit and hope it will decide to downshift or put it into 2nd gear myself so i can gain boost pressure to help me get back out of anything under 2000 RPM just is a dog an lags with no boost. The other day i try'd to go back up a steep boat launch after launching my boat and even when i put my truck into 1st with the shift lever my truck just could not make any boost and felt like it just limp mode up the hill no matter how i try driving the truck. The truck also shows signs of this problem on flat road with less degree of severity.
What i have try'd to fix this: I have replaced the injection pump, put on a new DRP fass lift pump. I have replaced the PCM module. I changed the Fuel filter. I adjusted the Throttle position sensor or APPS, I have inspected the turbochargers health seems to be fine with no shaft play as well at good movement and adjustment in the Wastegate. I installed a low pressure fuel warning light to ensure i have good pressure on the low pressure system. I have try'd adding a smarty and it helps improve power when on low settings but the fuel and timing is horribly tuned on it so i put the truck back on stock to prevent any possibility of damaging the engine. Something feels not right i feel like its electrical related. I try'd clearing the codes with the smarty and disconnecting both battery's then reseting the foot pedal calibration. that did not work either. still showing codes after too. I also notice the APPS or TPS sensor has MEXICO on it. I sometimes wonder if like my old 53 block this thing is junk too. I also Checked the MAP sensor it seems to be working fine.
Codes my truck is throwing: 1693 0523 0522 0230 0230 is a companion code i cannot get ahold of any kind of DTC reader that will read the JTEC companion code.
PLEASE ANY HELP OR INPUT TO HELP ME GET THIS GREMLIN OUT OF MY TRUCK WOULD BE EXTREMELY APPRECIATED!