TRANSMISSION DOWN SHIFTS TO LOW GEAR WHILE DRIVING AT HIGH SPEEDS ON THE INTERSTATE.
2008 Ford F-550 powertrain problems
moderate 4 complaints filed with NHTSA · avg repair $2,500
Complaints
4
Recalls
0
Crashes
0
Avg fix
$2,500
What owners are reporting 3 most recent
FORD 6.4L DIESEL ENGINES (2008-2010) IN F-250, F-350, F-450, AND F-550 TRUCKS CONTAIN RADIATORS THAT WERE IMPROPERLY CONSTRUCTED AND UNABLE TO WITHSTAND ENGINE PRESSURES AND LEAK COOLANT, AND CAN CAUSE CATASTROPHIC ENGINE FAILURES DUE TO OVERHEATING. FORD REPLACED COUNTLESS RADIATORS IN ITS 6.4L VEHICLES UNDER WARRANTY AND ISSUED A NUMBER OF SERVICE BULLETINS RELATED TO ITS 6.4L RADIATOR FAILURES…
TL* THE CONTACT OWNS A 2008 FORD F550 SD DIESEL. THE CONTACT STATED THAT THE VEHICLE WOULD INDEPENDENTLY DECELERATE WITHOUT WARNING. THE VEHICLE WAS TAKEN TO A DEALER WHO WAS UNABLE TO DIAGNOSE THE PROBLEM. THE MANUFACTURER WAS CONTACTED WHO DID NOT OFFER ANY ASSISTANCE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 50,000.
Common questions
How serious is the powertrain problem on the 2008 Ford F-550?
It's a documented issue but not catastrophic. 4 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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