← Power loss / limp mode on all engines
Symptoms · 6.4 Power Stroke (2008-2010)
6.4 Power Stroke (2008-2010): loss of power, limp mode or derate
2 documented failures on this engine list this among their signs. They are ordered from the most widespread down. Each one shows the signs in its record's own words, how to tell it from the others, the usual fix and any recall or bulletin.
Not sure which engine you have, or want the recalls for your exact truck? Check your VIN: it names the engine and lists the campaigns for that model year. Whether a recall is still open on your VIN: nhtsa.gov/recalls.
verified
How widespread: Common
8 NHTSA owner complaints match it, out of 133 checked
How it shows up
- rough running / power loss on #7 or #8; engine replacement conversations
Its other signs
- oil consumption rising; blue smoke
- fuel-diluted oil history (failed regens) precedes it
How to tell it apart
- track oil level/consumption trends; lab oil analysis for fuel %
- cylinder-balance test + compression/leak-down when a hole drops out
- inspect for failed-regen patterns (aborted regens, city duty) before blaming hardware
Usual fix
engine-level decision: reman/used long block vs rebuild with upgraded rings/pistons (state cost tier explicitly in recipes)
Root cause, parts and sources →
verified
How widespread: Common
6 NHTSA owner complaints match it, out of 133 checked
How it shows up
- 'exhaust filter' messages, derate/limp until regen
Its other signs
- failed regens on short trips; hot exhaust smell, fan roaring
- excessive backpressure worsens turbo seal leaks (feedback loop)
How to tell it apart
- soot/ash load PIDs + DTCs (P242F/P2463-family)
- if oil is reaching the exhaust, fix the source before/with the filter
- bake/pulse cleaning vs replacement decision by ash load
Usual fix
professional DPF cleaning when substrate intact; fix the oil source (turbo seals, rings) in parallel
Recalls and bulletins
07V-139TSB 20020
Root cause, parts and sources →
Other symptoms on the 6.4 Power Stroke (2008-2010)
Hard start, long crank or no-startBlue or gray smoke (burning oil)Losing coolantOverheating or temperature creeping upOil leak, oil consumption or rising oil levelTicking, knocking, rattle or whineMisfire, rough idle, hesitation or surging
Everything on the 6.4 Power Stroke (2008-2010)Its recalls and bulletins