The spark plugs may become dislodged from the cylinder heads. A loud popping noise can be heard and a subsequent misfire experienced. The threads on the spark plug ports in the cylinder head(s) can become stripped or missing when the spark plug is dislodged. The threads in cylinder heads may be replaced using “Lock-N-Stitch” aluminum inserts. Our technicians tell us thread replacement is performed when the vehicle is out of base warranty. Vehicles under base warranty receive a new cylinder head.
2004 Ford E-350 Problem Reports
Newest 2004 Ford E-350 Problem Reports
The Check Engine Light may illuminate, the engine may run rough and have misfires on acceleration. Commonly the ignition coils and/or the ignition coil boots are the cause of this problem. The rubber boot that insulates the coil to the spark plug can dry and crack allowing arcing. Inspect the coils and boots, and replace them as needed. Our technicians also recommend replacing the coil boots any time the spark plugs are replaced.
The front end may make a rattle noise over bumps. There may be handling issues, and play in the front wheels on inspection. If there is up and down movement on the front wheels while the lower control arms are being supported, inspect the upper and lower ball joints for excessive play. These are prone to failure from moisture entry and lack of lubrication. The ball joints should be replaced as needed.
If the slip yoke in the driveshaft is binding, it can make a clunking noise when pulling away from a stop. The slip yoke will need to be lubricated.
If the engine runs rough, has low power, and is overfilled with oil on dipstick, this is often caused by a leaking fuel injector(s). Each injector should be inspected for looseness and / or leakage. Loose or leaking injectors will need to be replaced.
This concern relates to vehicles equipped with the E4OD and 4R100 automatic transmissions. Fluid leaks from the rear of the transmission and excessive vibration felt in the vehicle while driving can be caused by a lack of lubrication to the rear of the transmission and rear seal failure. The extension housing (rear portion of transmission) can lose lubrication if the fluid supply hole becomes clogged. This leads to rear seal failure from lack of lubrication, and can cause bearing failure in the extension housing. The extension housing and gasket should be replaced and verify the fluid supply hole is clear of debris.
Delamination of the diesel fuel tank can occur resulting in a loss of power due to debris clogging the fuel filters. In some cases the fuel injection pump and/or fuel injectors have also been damaged. Ford has issued a service bulletin (#
Electrolysis can cause repeated failures of the heater core and radiator. The diagnosing technician should check for voltage present in the coolant, with the battery disconnected, because electrical current in the coolant causes electrolysis. Corroded or deteriorated parts should be replaced, and the coolant should be flushed. Ground straps can be added to help prevent future corrosion of components.
Leaking exhaust manifold gaskets can cause exhaust fumes to enter the vehicle. The exhaust manifold gaskets should be replaced as needed.
Broken pieces from catalytic converter can travel to the muffler and rattle, causing a buzzing noise to be heard in the muffler or exhaust system. The exhaust catalytic converter and muffler/pipe assemblies should be replaced.
There was a program in 2004 to replace the automatic transmission reverse planetary assembly for a factory defect. The defect caused the transmission to shift hard and possibly slip. If this repair is not done already, further damage may occur to the transmission, and overhaul / replacement may be necessary.
This concern relates specifically to the E4OD and 4R100 automatic transmissions. Transmission fluid leaking from the front of the transmission bell housing may also be accompanied with shifting and transmission engagement issues. This is often caused by transmission overheating and is the sign of a significant internal transmission problem. The superficial cause is the failure of the front pump seal of the transmission. The immediate repair is to remove the transmission, replace the front pump and seal, replace all fluid with the transmission filter, and verify proper flow through the transmission fluid lines and cooler. It is also recommended to make sure the vehicle is not pulling a load that is heavier than the gross vehicle weight limits because this can cause the transmission to overheat. Depending on the transmission's mileage, this can also be a good time to consider a complete overhaul or replacement with a remanufactured unit, as often just the pump and seal replacement is a short lived remedy.
A lack of power and possible Check Engine Light may be experienced with codes P0238, P0299, P0404, P0478, P2262, P2263. The turbocharger can become internally contaminated with sludge and deposits causing the variable vanes within the turbo to seize. The turbocharger can be disassembled to be cleaned, and the internal parts can be replaced as needed. If deterioration is too bad, replacement of the turbocharger may be necessary.
Internal issues with the Fuel Injector Control Module (FICM) can cause the engine to run rough, lack power, not start, or it may be hard to start. The FICM should be inspected for proper software revision and internal function. To repair, update the software, replace internal parts, and / or replace the entire FICM as needed.
A casting issue with the cylinder heads may allow fuel leakage into the cooling system. The cylinder heads should be inspected for fuel leakage where the injectors mount. Replacement of the cylinder head(s) that leak will be needed.