The 1993 Ford F-350 has 6 recalls, the most serious being a dual fuel tank defect where a failing check valve or fuel pressure regulator can cause fuel to overflow between tanks and spill onto the ground, creating a fire risk near any ignition source.
Vehicles with dual gasoline tanks are the focus of multiple related filings describing the same underlying problem: a worn fuel pressure regulator can damage the check valve inside the fuel pump assembly, allowing fuel to migrate from one tank to the other, overfill it, and leak out. The cruise control system accounts for the remaining two recalls. A speed control deactivation switch can leak internally and then overheat, smoke, or catch fire under the hood. There is also a wiring concern affecting vehicles that received a prior repair: a replacement wiring harness installed in an earlier remedy used incompatible polarity, placing the fuse in the wrong part of the circuit so it may not protect against an electrical short.
At a glance
What can fail
A previously installed wiring harness is incompatible with the vehicle's electrical circuit polarity, which can cause electrical system failures.
What the fix does
Dealers will install a new wiring harness or replace the mating electrical component to restore proper electrical compatibility.
Summarized — see the official notice for exact wording, dates, and contacts.
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At a glance
What can fail
The speed control deactivation switch may leak internally and overheat, smoke, or burn under certain conditions.
What the fix does
Dealers will disconnect the switch temporarily, then install a fused wiring harness once parts are available.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A damaged check valve in the fuel pump assembly may cause fuel to flow between the two fuel tanks instead of staying in the tank being used, leaving one tank with unused fuel.
What the fix does
Ford extends warranty coverage for fuel cross-flow to 12 years or 150,000 miles from warranty start, whichever comes first. Dealers will repair the condition at no charge if it occurs.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fuel pressure regulator may wear out, allowing fuel to flow between fuel tanks and potentially leak. A leak near an ignition source could cause a fire.
What the fix does
Dealers will replace the fuel pressure regulator with a stainless steel version.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The carbon steel fuel pressure regulator can wear out and malfunction, causing excessive fuel system pressure. This damages the fuel pump check valve, allowing fuel to transfer between tanks and overflow from the filler cap.
What the fix does
Dealers will install a stainless steel fuel pressure regulator to replace the worn carbon steel regulator.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A faulty check valve in the fuel pump lets unused fuel flow backward from one tank into the second tank, which can overfill it and cause fuel to spill out.
What the fix does
Replace the fuel pressure regulator and install additional check valves to prevent fuel from flowing backward between tanks.
Summarized — see the official notice for exact wording, dates, and contacts.
