Top 5 Ford F250 Super Duty Problems: Years 1999 to 2007

The Ford F-250 Super Duty is a heavy-duty version of the F250 that was introduced for the 1999 model year. If you’re shopping for a new truck or want to find out more about this model, learn the most common Ford F250 problems owners have run into with the Super Duty and how to fix them in this video and article.

Most Common 1^st Generation Ford F250 Super Duty Problems (1999 to 2007)

1. Radiator Leaking

Symptoms of a Radiator Leak

• Coolant leak at the front of the truck

Causes of Coolant Leaking Problems from the Front of the 1999 to 2007 Ford F250 Super Duty

If there is a coolant leak at the front of the 1st gen Ford F250 Super Duty, it’s probably from the radiator. The thermostat is also known to cause excessive pressure in the coolant system on this generation of models.

How to Fix a Coolant Leak at the Front

Replace the radiator and thermostat.

2. Spark Plugs Ejecting from the Cylinder Head

Symptoms of Spark Plugs Ejecting

• Tapping noise under the hood
• Engine misfires

Causes of Spark Plug Ejection

The spark plugs ejecting is mostly a problem with the V8 engines.

How to Fix Spark Plug Ejection Problems on the 1^st Gen Ford F250 Super Duty

You’ll need to remove the spark plug and get a repair kit for threads in the head.

3. Blower Motor Resistor Failure

Symptoms of Blower Motor Resistor Failure Problems on the 1999 to 2007 Ford F250 Super Duty

• Fan settings not working except for “High”

Causes of Blower Motor Resistor Failure

If there are problems with the fan settings in the 1st gen Ford F250 Super Duty where the higher settings work but the lower ones don’t, it’s usually because the blower motor resistor is bad.

How to Fix Blower Motor Resistor Failure

Sometimes the blower motor is underneath the dash but on these models it’s under the hood. The blower motor resistor is next to the blower motor and attached to the engine air filter housing. Disconnect the electrical connector, and remove the bolts from the resistor to replace it.

4. Faulty Turn Signal Switch

Symptoms of a Broken Turn Signal Switch

• Turn signals aren’t working when switched on

Causes of the Turn Signals Not Working

Issues with the turn signals on the 1999 to 2007 Ford F250 Super Duty are usually because of a faulty turn signal switch, but sometimes it’s the flasher relay that fails.

How to Fix the Turn Signals Not Working

Check the condition of the flasher relay before replacing the turn signal switch stalk.

5. Fuel Pump Failure

Symptoms of Fuel Pump Failure

• The truck won’t start. The engine will crank but it won’t turn over

Causes of Fuel Pump Failure

Sometimes the fuel pump on the 1^st gen Ford F250 Super Duty fails and causes issues with getting the truck started and running.

How to Fix Fuel Pump Failure

You could bang on bottom of the gas tank with a rubber mallet while an assistant is cranking the truck. This may start the engine, but it’s only a temporary fix. The fuel pump is located in the fuel tank and it will need to be replaced to fix this problem.

1^st Generation Ford F-250 Super Duty Model Years

• 1999 Ford F250 Super Duty
• 2000 Ford F250 Super Duty
• 2001 Ford F250 Super Duty
• 2002 Ford F250 Super Duty
• 2003 Ford F250 Super Duty
• 2004 Ford F250 Super Duty
• 2005 Ford F250 Super Duty
• 2006 Ford F250 Super Duty
• 2007 Ford F250 Super Duty

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