6.0L Power Stroke Troubleshooting Guide & … Low Power, Performance, & Driveability Concerns. Common Ford Part Numbers. The color of any visible smoke emitted from the tailpipe is a useful indicator in combustion characteristics (or lack I bought the truck with a P0237 code, MAP sensor …Nov 18, 2015 · If it does not, no further diagnosis is currently needed. Next, check for technical service bulletins (TSBs) regarding the concern. If no TSBs are found, locate the TCM and perform a visual inspection of the unit and wiring. Repair as needed. If no problems are found up to this point, move forward with a sequential diagnosis of the system. 6.7 Powerstroke OEM long block Long blocks assembled with everything that the short block has plus cylinder heads, glow plugs, lifters, oil cooler, oil filter and base, oil pan and pick up tube, push rods, thermostat and valve covers.