The 2024 F-350 Super Duty represents Ford's latest heavy-duty truck platform with the proven 6.7L Power Stroke diesel and 7.3L Godzilla gas V8. While brand new, emerging patterns from late 2023-2024 models and carryover issues from the previous generation point to specific weak spots, particularly in the 10R140 transmission and diesel emission systems.
10R140 Transmission Oil Cooler Failure
Occasional · high severity
Typical onset: 20,000-60,000 mi
Symptoms: Transmission slipping or harsh shifts, Coolant in transmission fluid (strawberry milkshake fluid), Transmission overheating warnings, Coolant loss with no visible leaks
Fix: Internal cooler failure allows coolant and ATF to mix, requiring complete transmission flush, cooler replacement, and often torque converter replacement. 8-12 hours labor depending on severity of contamination. If caught early, external cooler can prevent recurrence.
Estimated cost: $2,800-5,500
6.7L Power Stroke DEF System and Injector Failures
Common · high severity
Typical onset: 40,000-90,000 mi
Symptoms: Check engine light with DEF quality or NOx sensor codes, Reduced engine power / limp mode, DEF consumption higher than normal (1 gallon per 200-300 miles), Hard starting or rough idle with injector issues, White smoke on cold starts
Fix: DEF injector, pump, or NOx sensors fail regularly. Injectors often require replacement in pairs or complete set. DEF system repair: 3-5 hours. Single injector: 6-8 hours. Full set of 8 injectors: 18-24 hours with calibration. Always use OEM DEF and change fuel filters religiously at 10k intervals.
Estimated cost: $1,200-8,500
6.7L Power Stroke CP4.2 Fuel Pump Catastrophic Failure
Rare · high severity
Typical onset: 60,000-150,000 mi
Symptoms: Sudden loss of power, Engine stalling and no-start, Metal contamination in fuel system, Fuel in oil (dilution), Check engine light with low fuel pressure codes
Fix: CP4.2 pump grenades internally, sending metal through entire fuel system. Requires fuel pump, all 8 injectors, fuel rails, lines flush, tank drop and clean, sometimes new tank. 35-50 hours total. Many owners install CP3 conversion kit ($3k-4k) or Disaster Prevention Kit as insurance. This is THE nightmare scenario for 6.7L owners.
Estimated cost: $12,000-20,000
Transmission Mount Failure
Common · low severity
Typical onset: 40,000-80,000 mi
Symptoms: Clunking when shifting into gear, Vibration at idle in gear, Excessive drivetrain movement when accelerating, Visible cracks or separation in rubber mount
Fix: Rubber transmission mount deteriorates from torque and heat, especially with diesel. Direct replacement takes 1.5-2.5 hours. Upgraded polyurethane mounts last longer but transmit more NVH. Common enough that many shops stock them.
Estimated cost: $350-650
7.3L Godzilla Spark Plug Blowout
Occasional · medium severity
Typical onset: 30,000-70,000 mi
Symptoms: Sudden misfire with loud popping sound, Loss of power on one cylinder, Check engine light with misfire code, Visible spark plug ejected from cylinder head
Fix: Aluminum head threads strip, ejecting spark plug. Requires time-sert or helicoil thread repair kit. 3-5 hours if head doesn't need removal. Some cases require head R&R for proper repair (12-16 hours). Preventive: never over-torque plugs, replace at 100k, use anti-seize. Less common than old 5.4L Triton but still happens.
Estimated cost: $800-3,500
6.7L EGR Cooler and Valve Carbon Buildup
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Check engine light with EGR flow codes, Loss of power under load, Black smoke on acceleration, Rough idle when warmed up, Coolant smell from exhaust
Fix: EGR system clogs with carbon and soot. EGR valve cleaning: 2-3 hours. Full EGR cooler replacement: 6-9 hours. Often done with DPF cleaning service. Short trips and idling accelerate buildup. Highway miles and quality oil help. Delete kits exist but void warranty and break federal law.
Estimated cost: $900-3,200
Owner tips
6.7L diesel owners: Change fuel filters every 10k miles religiously, use TOP TIER diesel, consider CP4 failure prevention systems
Install auxiliary transmission cooler on all models if towing regularly — the factory cooler is marginal for sustained loads
DEF system: only use fresh name-brand DEF, never let tank run below 1/4, avoid contamination at all costs
7.3L gas owners: Replace spark plugs at 100k (not 150k), never over-torque, inspect threads during service
Extended idle time kills diesels — install block heater for cold climates, avoid excessive idling
These trucks live on data — get a quality OBD2 scanner for early warning on emission system issues before limp mode hits
Capability is undeniable, but the 6.7L diesel carries expensive emission-system risk and the CP4 fuel pump is a ticking time bomb; 7.3L gas is more reliable long-term but sacrifices towing capacity — buy extended warranty if purchasing diesel, budget $2k/year for diesel maintenance reality.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Dual battery system standard on 6.7L Power Stroke diesel; second battery BCI Group 65 also required
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Control Modules — 2024 Ford F-350
Every control module on the 2023-2026 Ford F-350 — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
⚠️ Mileage programming and as-built configuration required; 12-inch digital cluster available
Passive Anti-Theft System Module (PATS)security gateway +0.5 hr▸ programming details
📍 Integrated within BCM
🔧 Ford FDRS + J2534
⚠️ Function within BCM; key programming required
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2024 Ford F-350 6.7L V8 Power Stroke Diesel and can vary by trim.
🔧 Built by master technician Chris Hackleman · Master Technician · 20+ years.