Riffraff Diesel Technical Knowledge Center
OBS 7.3 to Super Duty UVCH Mod: Better connections, better operation
Mar 4th 2026
If your OBS 7.3 (’94.5–’97) has random misses, contribution codes, rough cold starts, or the classic “it runs better when I wiggle the valve cover plug”… you&rsquo
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The Ford “Switch Fire” Recall Family: 99V-124, 05S28 (05V-017), 07V-078, 07V-336, and 09V-399
Posted by Adam Blattenberg on Feb 20th 2026
If you’ve ever heard an old Ford guy say “check that cruise control switch before it checks your garage for smoke detectors,” this is what they’re talking about.
Easilly the mo
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7.3L Powerstroke ICP and IPR Diagnosis/Testing/Set-Up with AutoEnginuity
Feb 18th 2026
Troubleshooting Injection Control Pressure (ICP) or Injection Pressure Regulator (IPR) issues can be done with AutoEnginuity (Ford Enhanced) quickly.
AutoEnginuity can be found here: https://www.riffr
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Every Recall Issued For the 1994-2003 Ford Equipped with the 7.3L Powerstroke
Feb 6th 2026
There’s dozens of recalls associated with our trucks. Some of these we’re all aware of, some are news to us, and some (the mass majority) truck owners were never even told about. It’
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7.3 Powerstroke PCM Code Locations (1994–2003) + How to Decode What You’re Looking At
Feb 6th 2026
Ford didn’t make it easy: on a 7.3 truck you’ll see multiple “PCM codes” that mean different things (hardware vs. software vs. emissions calibration). The trick is knowing wher
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