2008 Ford F-350 Super Duty Problems
RepairPal has identified the most common problems with the 2008 Ford F-350 Super Duty based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
Software enhancements are available to remedy inconsistency and confusion about the Diesel Particulate Filter (DPF) cleaning cycle - “Regeneration” mode. The Powertrain Control Module (PCM) will need to be reprogrammed to add several enhancements, including a more reasonable driving experience during the cleaning cycle and instrument cluster notifications of the cleaning status.
The cooler for the EGR valve can leak coolant internally, which causes white smoke to come from the tail pipe. Hot exhaust gases are cooled by the EGR cooler before being circled back into the engine.
Spark plugs in the Ford F-350 Super Duty can be very difficult to remove.
Ford has issued a service bulletin (08-7-6) to address this issue, which includes a recommended procedure on how to remove the plugs. Failure to follow the recommended procedure can result in the one or more spark plugs breaking off in the cylinder head.
The recommend procedure is as follows. Using this procedure will greatly reduce the chance of breaking a spark plug.
1. Break the spark plugs loose when the engine is warm.
2. Turn each plug 1/8 to 1/4 turn and soak the treads with 1/2 to 3/4 teaspoon of Motorcraft Carburetor Tune-Up Cleaner or a quality penetrating oil. Do not try to remove the plugs at this time.
3. Let the threads soak for at least 15 minutes.
4. After the soak period, tighten and loosen each spark plug, working it back and forth until the turning effort is reduced. Then, you can remove the spark plug.
There are special tools available to remove the broken spark plugs and repair shops will often charge additional labor for the removal of each broken spark plug.
The rear sliding glass window may stop working, or binds in motion. The power slider cable binds causing slow, or no operation. The glass assembly will need to be replaced, the cable is included in the assembly.
A severe lack of power may develop because the hose from the turbocharger to the intake manifold can come loose, resulting in loss of boost pressure to the engine.
The high pressure diesel fuel injection pump may fail, resulting in a "no start" condition.
The 2008-2010 Ford F-350 with automatic climate control may have a problem with frequent fan speed changes when using the heater or air conditioner. Normally, the fan speed changes only to maintain a selected temperature, but when the fan speed changes frequently and needlessly, there is an issue with the fan speed control unit.
The fan speed control unit, sometimes erroneously called the blower motor resister, regulates the speed for the blower motor in order to maintain the temperature set by the driver. When it fails, the fan will run at random settings, and the climate control will be inaccurate.
Note: this does not affect the temperature of the air that comes from the vents, it affects the amount of air that comes from the vents.
The repair is simple, and quick. The control unit is located behind the glove box in most models, and removal and installation takes only minutes.
Also note: this only applies to vehicles with single or dual automatic climate control.
The 2004-2010 Ford F-350 with manual temperature and fan controls may have problems with the the blower motor only blowing air on certain settings. Most commonly the fan will only run on the highest setting. This is a well documented problem, and is caused by a failing blower motor resistor.
Correcting the problem is straight forward, and requires replacement of the small resistor. The resistor is normally found behind the glove box, next to the blower motor.
If the engine cranks but will not start, this may be caused by damaged wiring to the high pressure fuel pump. Wiring to the pump can be chafed, which causes the pump to stop working. The chafed wires will need to be accessed and repaired.
A leak in the exhaust down pipe and cause smoke to be seen around the front of the vehicle and engine compartment, and exhaust fumes in the cab. The exhaust down pipe should be replaced.
If the driveline angle is out of adjustment, it can cause shuddering from the vehicle when accelerating from a stop. The driveline angle should be adjusted to reduce vibration in most driving conditions.
A defective driveshaft can cause a drone to be heard from the driveline area. The driveshaft should be replaced with a revised unit.