Hey guys I am running into a issue. 2008 Ford 6.4 Automatic swapped the 6.4 out to a 5.9 cummins. After doing some tuning with the hp, I have got the transmission shifting perfect and everything working together except one little issue.
When I first start the truck the ford ecm thinks the truck is under 95%+ load and shutting off the throttle. The higher I raise the RPM the lower the load goes. If I clear Codes while it is running then everything is perfect (the load reverts to 0% at idling and the Pedal works.) The ecm shutting the pedal off screws up the transmission shifting as the transmission does not see the throttle position. I've been fighting with this for a couple months any ideas would help greatly.