RPM fluctuation (small amounts) - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 02-04-2014, 04:05 PM Thread Starter
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RPM fluctuation (small amounts)

Recently I have noticed at idle, I can hear and see a slight bump up in rpms…maybe 50 to 100 rpm that last about a second and goes back down. Almost at a rythym when it starts doing it…..say 5 seconds normal then 1 quick bump up only goes up in rpm not down. Then I hold the accelerator to say 2000 rpm and i can see bigger fluctuations (up and down say 100 to 200 rpm not quick bumps up or down but more gradual fluctuations). I braced a stick on the seat thinking is was just my foot moving, and I still got the fluctuation. Took it to dealer today and they cleared a sticking turbo code and said let them know if I have any more problems……dealers sometimes get me so mad…that was the reason I took it in…anyway….any thoughts. Is a bigger problem coming. Are these fluctuations normal….I have had the truck for 6 years and never noticed it. It is a 2006 6.0.
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post #2 of 2 Old 02-05-2014, 05:09 PM
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mine is/was doing this also. but now im loosing power like its runing out of diesel and now have codes for map/boro, and turbo boost cont. range, exhaust pressure cont. valve high input. but no help yet

03 FX4 with livewire and tunes from mike at MKM customs. EGR delete, zoodad mod,AIRAID intake, coolant filter, ccv reroute,remote trans filter kit, HID's, built in nav unit with back up cam and dvd, 20% tint,led lights inside and out,huskie mats,08 tailgate and rear lights,rhino lined bed,tripple guage pod with glowshift guages, boost,fuel,volts, headach rack,4'' DP with open exhust and 5'' SS tip,2.5 leveling kit with duel front shocks, 33'' goodyear tires and no payments mod.
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