Looking for some guidance as I'm approaching a deadline (race day is coming in a couple weeks). I'm closing in on the end of my swap and I have a couple of (I think related issues). This is my first LS swap as well as my first time using HP Tuners so I apologize if this is in fact not a tune issue. Issue is as follows:
I have verified that the shift selector arm on the transmission housing is in park. However when I start the vehicle and let it idle the HP Tuners scanner shows D2 as the selected gear. While in this state, the engine will not rev past 1600 RPM. Physically clicking through the gears on the trans does not change anything in the scanner. The trans will go into gear though and spin the driveshaft (vehicle is on jackstands).
Now with the transmission physically in drive (click it into drive then start it), I can hit the gas and it revs mercilessly and bald eagles scream and my pants get a little tighter......
So is there something in the tune causing this or did I miss something in the wiring you think?
Thanks for any input guys/gals!
Jeremy
Edit: sorry I forgot to add the important stuff
Donor is a 2011 Express 3500
4.8 L20
E38 ecu
6L90e
T43 TCU
Factory harness trimmed down
All of it is in a 2002 Crown Victoria used for endurance road racing.