I have a 2012 ProStar and the POS Maxxforce under the hood has 2011 stamped on it. I've been having similar issues and couldn't find the problem. Turns out it was the INTAKE MANIFOLD PRESSURE SENSOR. Drivers side, 3/4 inch wrench will get it out, I changed it and the truck ran like a raped ape for about 2,000 miles and now its acting up again. Power keeps cutting out, cruise will not stay armed or active, 13 codes through to OBD scan on the dash, multiple dash lights to include ABS MODULE, TC, and that aggravating yellow arrow that's pointing down. Does anyone have a list of these SPN codes so I can cross reference? I'll list mine below. And this truck is DELETED. All of the DPF and and emissions were deleted at 150,000 miles. The truck currently sits at 485,000. Has ran absolutely fine until now. Active SPN: 524285 FMI: 14 OC: 1 SA: 150 Conn: ---- Pin: N/A SPN: 1045 FMI: 2 OC: N/A SA: 11 Conn: ---- Pin: N/A Prev. Active SPN: 2588 FMI: 15 OC: 126 SA: 0 Conn: ---- Pin: N/A SPN: 2588 FMI: 15 OC: 126 SA: 0 Conn: ---- Pin: N/A SPN: 639 FMI: 14 OC: 2 SA: 11 Conn: ---- Pin: N/A SPN: 639 FMI: 2 OC: 1 SA: 11 Conn: ---- PIn: N/A SPN: 2000 FMI: 9 OC: 1 SA: 23 Conn: ---- Pin: N/A SPN: 597 FMI: 0 OC: 126 SA: 33 Conn: ---- Pin: N/A SPN: 598 FMI: 7 OC: 5 SA: 33 Conn: ---- Pin: N/A SPN: 2362 FMI: 5 OC: 4 SA: 33 Conn: ---- Pin: N/A SPN: 2642 FMI: 5 OC: 3 SA: 33 Conn: ---- Pin: N/A SPN: 4026 FMI: 5 OC: 3 SA: 33 Conn: ---- Pin: N/A SPN: 520650 FMI: 0 OC: 13 SA: 33 Conn: ---- Pin: N/A SPN: 520211 FMI: 7 OC: 3 SA: 58 Conn: ---- Pin: N/A
Ours did the same. It was the low pressure turbo failing. See if you can till turn the turbo freely. If not, that may be your problem.