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DFM disabler released
No. The engine "shutting off" under coasting and refiring at ~14mph has nothing to do with DFM. The solenoids aren't on and supplying oil to deactivate the lifters. It's Deceleration Fuel Cutoff that causes that phenomenon. It's simply cutting fuel to the engine when it's not needed to save...- RG23RST
- Post #134
- Forum: Engine & Drivetrain
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DFM disabler released
You're more likely to hear and feel vibrations from the DFM once you get more miles on the rig. 10-20 thousand miles and the springs on the exhaust valve (or valves if you have a 6.2) get a little weaker and the valves can flutter meaning more unwanted vibrations working their way into the cab.- RG23RST
- Post #76
- Forum: Engine & Drivetrain
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DFM disabler released
Please don't post misinformation. The lifters are de-activated via oil pressure directed from the oil control solenoids. Oil pressure is not reduced to the hydraulic lash adjusting portion of the lifter during this operation. In reality the lifters see more lubricating oil during DFM operation...- RG23RST
- Post #75
- Forum: Engine & Drivetrain
