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.
The synchronizer shaft for the camshaft position sensor can cause a loud squeak or chirping noise due to failure of the upper bushing. The noise may be erratic and is usually present when the engine is warm.
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.
2003 Ford Ranger Questionswhat caused my engine to lose oil pressure and freeze (1 answer)
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
The problem seemed to start all of a sudden. I have to keep the nozzle mostly out of the neck and hold it so it is centered in the hole. I can only pump the gas in at a trickle. I have had this problem every gas station I go to.
shimmy in the front end especially noticeable over 60 mph