6.0L Power Stroke Engine and DrivetrainDiscussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super-Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.
2003 F-550 150,000 miles everything is stock. My speedometer started going crazy today after going down a rough road. The truck started to idle rough and would jerk on the highway. The rpms wouldnt change but the truck felt like it was trying to downshift or change gears . One dealer earlier this summer said the speed sensor was going , so I figured thats what it was . I changed it tonight and its still doing it though not as bad. Any Ideas?
Mine does the same thing. Iv posted here weeks ago about it, and no one knows anything about this. The dealer says it runs perfect, they cant replicate. Does yours loose half power when it does the speedo sh!t? Mine acts like Im riding the brakes while driving. No power then it will just work again.
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2004 F-250 Lariat late build 4X4 CC/LB auto,fully loaded with sunroof, power slider and backup sensors , White with 12" ICON lift, 6 superduty valved bilsteins, flip steering, 38" MTZs on 20x12 chrome Fuel Hostage wheels, stock gears, superlift truspeed, fumoto, high idle mod, large case high amp alternator, floating traction bars, airraid intake with elbow, 4" turbo back, studded, powerslots with hawk pads, billet grill, 55 watt HIDs 6000k heads and fogs, clear corners, 7" Eclipse AVN6620BT NAV w/ back up camera, massive JL stereo 300/4 and 500/1, 2 12s behind back seat, amp research steps, sirius, '08 diff cover, redhead steering box,, coolant filter kit, hush panels and door seal mod, quad pod with boost, EGT, water temp, and fuel pressure gauges
Mine will buck or jump like its trying to change gears or something. If I put the cruise control on the engine will sputter or jerk a little. It probably would act like its losing power , once it started doing it I just babied it home. I was scared of a large towing bill.
Mine will buck or jump like its trying to change gears or something. If I put the cruise control on the engine will sputter or jerk a little. It probably would act like its losing power , once it started doing it I just babied it home. I was scared of a large towing bill.
If the speedos off the tranny gets lost and doesnt know when to shift.
The only thing thats made mine stop or at least do it less, was to back in and out all ground wires bolts I could find, engine and inside cab. I also wiggled all the fuses and plugs around the fuse box area. It must be a bad connection somewhere.
I also put a new speed sensor in the diff, but that did nothing.
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2004 F-250 Lariat late build 4X4 CC/LB auto,fully loaded with sunroof, power slider and backup sensors , White with 12" ICON lift, 6 superduty valved bilsteins, flip steering, 38" MTZs on 20x12 chrome Fuel Hostage wheels, stock gears, superlift truspeed, fumoto, high idle mod, large case high amp alternator, floating traction bars, airraid intake with elbow, 4" turbo back, studded, powerslots with hawk pads, billet grill, 55 watt HIDs 6000k heads and fogs, clear corners, 7" Eclipse AVN6620BT NAV w/ back up camera, massive JL stereo 300/4 and 500/1, 2 12s behind back seat, amp research steps, sirius, '08 diff cover, redhead steering box,, coolant filter kit, hush panels and door seal mod, quad pod with boost, EGT, water temp, and fuel pressure gauges
I ziptied the speed sensor and the pigtail together and checked all the wiring in the rear end and along the frame, still had an eratic speedo. I then just shook the wires under the hood behind the dash and the problem has gone away. so something is rubbing somewhere.
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, White with 12" ICON lift, 6 superduty valved bilsteins, flip steering, 38" MTZs on 20x12 chrome Fuel Hostage wheels
, stock gears, superlift truspeed, fumoto, high idle mod, large case high amp alternator, floating traction bars, airraid intake with elbow, 4" turbo back, studded, powerslots with hawk pads, billet grill, 55 watt HIDs 6000k heads and fogs, clear corners, 7" Eclipse AVN6620BT NAV w/ back up camera, massive JL stereo 300/4 and 500/1, 2 12s behind back seat
, amp research steps, sirius, '08 diff cover, redhead steering box,
, coolant filter kit, hush panels and door seal mod, quad pod with boost, EGT, water temp, and fuel pressure gauges
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