1985 Autocar — we work on any truck
If it runs diesel and needs help, we'll show up. Age is not a barrier — classic, vintage, or modern.
Mobile Ford Super Duty Truck Repair
Ford Super Duty Truck Repair in Charleston, SC — Gas & Diesel, We Come to You.
On-site diagnostics and repair for Ford work trucks — F-250, F-350, F-450 and up. Whether it is a 6.7L Power Stroke with a DEF derate, a 7.3L Godzilla gas job, or an older 6.0L/6.4L, we come to your yard, jobsite, or roadside, test the actual cause, and give you a clear repair direction before parts get thrown at it.
- 6.7L Power Stroke, 7.3L Godzilla, 6.2L/6.8L gas, and older 6.0L/6.4L diesels
- Ford Super Duty work trucks and fleets — ¾-ton and up, gas and diesel
- Charleston, North Charleston, Summerville, Goose Creek, Mount Pleasant
6.7L Power Stroke — Diesel
Known 6.7L Power Stroke problems we diagnose
CP4 fuel pump & injectors
CP4.2 fuel pump failure and metal contamination, injector faults, and high-pressure fuel problems traced before the whole system gets condemned.
EGR, DPF, DEF & derate
Regen that will not complete, EGR and DPF faults, DEF/SCR and NOx codes, and speed derates diagnosed to the real cause to keep the truck moving.
VGT turbo & boost
Sticking VGT turbo, low power, boost and overboost codes, and soot-related turbo concerns tested where the truck is parked.
Glow plugs, coolant & hard start
Glow plug and hard-start issues, coolant intrusion, no-start conditions, and rough cold running worked through systematically.
7.3L Godzilla & 6.2L / 6.8L — Gas V8 / V10
Ford gas Super Duty problems we handle
Misfires, coils & plugs
Misfire codes, ignition coil and spark plug failures, and rough-running gas V8/V10 concerns confirmed with live data before parts.
Cooling & overheating
Thermostats, water pumps, radiators, and cooling-system faults on the 7.3L Godzilla and 6.2L/6.8L kept from turning into a bigger failure.
Driveability & tune-up
Hesitation, stalling, poor fuel economy, sensor faults, and general driveability sorted with a proper tune-up and scan.
No-start & electrical
Crank/no-start, batteries, starters, charging, and wiring faults on gas Super Duty work trucks tested on location.
6.0L / 6.4L Power Stroke — Older Diesels
Older Power Stroke problems we still fix
Head gaskets & studs
The classic 6.0L blown head gasket story — we confirm it and lay out the head stud and gasket direction instead of guessing.
Oil cooler & EGR cooler
Clogged oil coolers, failed EGR coolers, overheating, and coolant loss on the 6.0L and 6.4L diagnosed at the source.
FICM & injectors
FICM failure, rough cold start, injector and high-pressure oil system faults on the 6.0L tested before a parts-cannon repair.
6.4L fuel & regen
6.4L injector, radiator, and regen/DPF concerns worked through so you know what actually failed and what is next.
General Ford Super Duty Service
What else we do on your F-250 and up
Full diagnostics & scan
Fault codes, live data, and targeted circuit testing across engine, transmission, chassis, and body modules.
Ball joints & front end
Ball joints, front-end wear, and the wander and clunks Super Dutys are known for, checked and corrected.
Tie rods & steering
Tie rods, steering components, and death-wobble-style complaints diagnosed and repaired on location.
Wheel bearings & hubs
Wheel bearings, hubs, and unit-bearing noise or play sorted before it strands the truck.
Brakes & rotors
Brake pads, rotors, calipers, and hydraulic concerns handled where the truck is parked.
Oil changes & scheduled PM
Oil changes, scheduled preventive maintenance, and fleet PM to head off the next breakdown.
Suspension
Shocks, springs, bushings, and heavy-load suspension wear inspected and repaired for work-truck duty.
Batteries, charging & electrical
Batteries, alternators, starters, grounds, wiring, and sensor faults tested on-site.
A/C, heat & cooling system
A/C and heat performance plus cooling-system service to keep the cab and the engine in range.
Why Call a Mobile Ford Mechanic
Skip the tow and the dealership wait
Getting a Ford Super Duty to a shop or dealer means a tow, a bay in someone's queue, and days of downtime before anyone has even looked at it. A lot of that is avoidable. Many Power Stroke and gas Super Duty faults can be diagnosed — and often repaired — right where the truck is parked.
Lowcountry Diagnostics brings the diagnostic equipment to the truck and works through the fault systematically. The goal is a clear answer: what failed, what was tested, what needs to happen next, and whether it can be handled on-site. Work trucks and fleets, gas and diesel, ¾-ton and up.
Why fleets & owners call us
- Mobile Ford service where the truck is sitting
- Both Power Stroke diesel and gas V8/V10 experience
- Testing before parts replacement
- Clear written findings and next steps
- 24/7 Charleston-area availability
Need a Ford Super Duty mechanic in the Charleston area?
Call or text Lowcountry Diagnostics and we will come to the truck — gas or diesel.
Common Ford Super Duty repair questions
Do you work on both Power Stroke diesel and Ford gas trucks?
Yes. We handle the 6.7L Power Stroke and older 6.0L and 6.4L Power Stroke diesels, plus the 7.3L Godzilla gas V8 and 6.2L/6.8L gas V8/V10 — F-250 and up, work trucks and fleets.
Can you diagnose a Super Duty derate or DEF warning on-site?
Usually. We read the real fault behind EGR, DPF, DEF, SCR, and NOx codes, regen problems, and speed derates where the truck sits, so you avoid an unnecessary tow or the wrong parts.
Do you handle 6.7L CP4 fuel pump failures?
Yes. We test for CP4 fuel pump failure and metal contamination, injector and high-pressure fuel faults, and hard-start or no-start conditions, then give you a clear repair direction.
Do you come to my yard or jobsite?
Yes. We are mobile — we come to your yard, jobsite, terminal, shop, or roadside across the Charleston area. Call or text (843) 310-0995.
Request Ford Super Duty Service
Tell us where the truck is and what it is doing. For urgent truck-down calls, calling or texting is fastest.
Urgent breakdown? Call or text (843) 310-0995 now.
Recent Repair Photos
A look at the repairs we make
Real field photos from Lowcountry Diagnostics — from engine diagnostics and electrical to hydraulic, HVAC, and heavy-duty truck service, handled on-site across the Charleston area.
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