2003 Ford Ranger Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Ford Ranger
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2003 Ford Ranger ProblemsEngine Buck/Misfire at Freeway Speeds
The engine may misfire and/or buck while driving at freeway speeds with no fault code stored in the powertrain control module (PCM). This can be caused by an intermittent fault with the camshaft synchronizer assembly. This condition can be diagnosed by monitoring knock sensor data as per Ford service bulletin #05-22-12. Replacement of the synchronizer assembly will be required to correct this concern.
If you experience cold starting problems, stalling at idle, or hesitations during acceleration, it may be the idle air bypass valve. This valve helps the vehicle idle steadily and run when the accelerator pedal is not pressed.
If a noise from the rear end is heard when going around turns or after driving at highway speed for an extended period, this could be caused by a failing deferential clutch kit. An updated differential clutch kit available.
2003 Ford Ranger QuestionsMy fan control will only work on High setting. I replaced the fan control switch (2 answers)
But it will still only work on High. What is the solution?
Running great next time crank is skipping n sounds like valve clicking
Bank 2. And lean
i had the head gaskets replaced and about 200 miles later i lost oil pressure and stopped when i tried to restart the engine had froze up
i had oil but had lost water