can fuel gelling cause Apps DSC

[rjones]

My story it is 10* ambient I just pulled onto the Expressway engine temp was around 120* hit 70 mph and the throttle went fuel for a few seconds then dead pedal then a few seconds later started bucking like starving for fuel then check engine light came on so I pulled onto the shoulder and shut truck off restarted it and started off got it to 50 mph but wouldn't shift ... . into 3rd... ... got off the E way stopped at a light truck kinda jumped started rolling again all was normal drove it home engine light still on I pulled the codes p2123, p2121 ,p2509... . got it home put some Diesel 911 in cleared the codes let it run for awhile got up in -5 temps the next AM drove to work w/o a glitch drove it home w/o a glitch my Edge w/ Attitude I set to view throttle position and it show smooth movement could it have been fuel gelling and just so happened since I was driving at 70 threw a hi voltage code??

 

[sag2]

If it was just the two APP codes I would say you have a connector or APP problem. But throwing in the P2509 that one leads directly to a battery connection, Battery feed to ECM (check the main lug on the TIPM, wire from the battery to the TIPM), or possibly the ground on the side of the engine by the fuel pump (pre in-tank).

 

[rjones]

I replaced the Apps its better it dead pedal once again on a cold start on the e way but for only a second no codes been fine since however still uneven idle at a cold start in the AM ... .